Last data update: Aug 15, 2025. (Total: 49733 publications since 2009)
| Records 1-30 (of 103 Records) |
| Query Trace: Nair P[original query] |
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| Safety monitoring of Pfizer's Respiratory Syncytial Virus Vaccine in pregnant women in the Vaccine Adverse Event Reporting System (VAERS), 2023-2024, United States
Moro PL , Getahun A , Romanson B , Marquez P , Tepper NK , Olson CK , Jones JM , Nair N , Broder KR . Vaccine 2025 62 127497 BACKGROUND: In September 2023, the Advisory Committee on Immunization Practices and the Centers for Disease Control and Prevention (CDC) recommended Pfizer's Respiratory Syncytial Virus (RSV) vaccine for pregnant women at 32-36 weeks' gestation using seasonal administration to prevent RSV-associated lower respiratory tract disease (LRTD) in infants aged <6 months. In clinical trials among pregnant women at 24-36 weeks' gestation, more preterm births and hypertensive disorders of pregnancy were noted among Pfizer's RSV vaccine recipients compared with placebo, but the differences were not statistically significant. Post-licensure safety monitoring of the Pfizer RSV vaccine in pregnant women is important to help inform immunization policies. OBJECTIVE: We assessed reports after Pfizer's RSV Vaccine in pregnant women submitted in the Vaccine Adverse Event Reporting System (VAERS), a passive surveillance system. METHODS: We searched VAERS for U.S. reports of adverse events (AEs) or vaccination errors in pregnant women vaccinated with the Pfizer RSV vaccine. We analyzed reports received from August 20, 2023 through June 3, 2024. Clinicians reviewed reports and available medical records. RESULTS: VAERS received 121 reports of pregnant women who received the Pfizer RSV vaccines. Injection site and systemic reactions were described in 44 (36 %) reports. The most commonly reported pregnancy-specific outcomes were preterm birth in 37 (31 %) and hypertensive disorders of pregnancy in 9 (7 %). CONCLUSIONS: During the first U.S. RSV season in which the Pfizer RSV vaccine was approved and recommended for use during pregnancy, the types of AEs reported were consistent with prelicensure studies. Preterm birth was described commonly in the reports. Studies assessing potential association between Pfizer's maternal RSV vaccine and preterm birth are ongoing. CDC and Food and Drug Administration (FDA) will continue to monitor the safety of this vaccine in future seasons. |
| Amyotrophic Lateral Sclerosis as a Multistep Process in the United States: A Population-Based Study
Berry J , Raymond J , Larson T , Horton DK , Han M , Nair T , Al-Chalabi A , Mehta P . Ann Clin Transl Neurol 2025
BACKGROUND: Amyotrophic lateral sclerosis (ALS) is a fatal, progressive neurodegenerative disease that typically results in death within 3-5 years from symptom onset. However, little is known about the environmental exposures, clinical aspects, or social determinants of health factors that may be associated with the disease. Multistep modeling has been previously applied to cancer research, demonstrating a linear relationship between logs of incidence and age. This method may help to understand the mechanisms involved in the development of ALS in the United States (e.g., environmental exposures, genetic mutations). We aim to assess whether ALS is a multistep process among patients enrolled in the largest ALS registry in the world-the United States' National ALS Registry. METHODS: Incident ALS cases, defined as confirmed and likely, cases between 2012 and 2019 were obtained from the National ALS Registry. Age-standardized incidence was calculated for all cases and by sex. The log incidence of ALS was regressed against the log of age (years) at case determination, on average, for each year and by sex. FINDINGS: Between 2012 and 2019, there was a mean of 5253 incident ALS cases (confirmed or likely) per year. We identified a linear relationship between the log of the average incidence and log age overall (r(2) = 0.99), for men (r(2) = 0.99), and for women (r(2) = 0.98). The incidence slope estimates were 4.8 (95% CI: 4.4-5.1) overall, 4.7 (95% CI: 4.4-5.1) for men, and 5.0 (95% CI: 4.5-5.5) for women. INTERPRETATION: The linear relationships observed overall, for men, and for women are consistent with a multi-step process. The slope estimates, on average, are approximately 5.0, which suggests that the development of ALS is a six-step process. Further investigation of these steps can elucidate potential risk factors and treatments for ALS. |
| Association of cancer and outcomes of patients hospitalized for COVID-19 between 2020 and 2023
Jalloh AT , Merson L , Nair D , Hassan S , Kamara IF , Nuwagira I , Tengbe SM , Tejan YS , Kabba M , Lakoh S , Grant DS , Samuels RJ , Kamara RZ , Terry RF . F1000Res 2024 13 673 BACKGROUND: The coronavirus disease 2019 (COVID-19) has caused substantial morbidity and mortality on a global scale. A strong correlation has been found between COVID-19 treatment outcomes and noncommunicable diseases such as cancers. However, there is limited information on the outcomes of cancer patients who were hospitalised for COVID-19. METHODS: We conducted an analysis on data collected in a large prospective cohort study set-up by the International Severe Acute Respiratory and Emerging Infection Consortium (ISARIC). All patients with laboratory-confirmed or clinically-diagnosed SARS-CoV-2 infection were included. Cancer was defined as having a current solid organ or haematological malignancy. The following outcomes were assessed; 30-day in-hospital mortality, intensive care unit (ICU) admission, length of hospitalization and receipt of higher-level care. RESULTS: Of the 560,547 hospitalised individuals who were analysed, 27,243 (4.9%) had cancer. Overall, cancer patients were older and had more comorbidities than non-cancer patients. Patients with cancer had higher 30-day in-hospital mortality than non-cancer patients (29.1.3% vs 18.0%) and longer hospital stays (median of 12 days vs 8 days). However, patients with cancer were admitted less often to intensive care units than non-cancer patients (12.6% vs 17.1%) and received less invasive mechanical ventilation than non-cancer patients (4.5% vs 7.6%). The hazard ratio of dying from cancer, adjusted for age, sex and country income level was 1.18 (95%CI: 1.15-1.2). CONCLUSIONS: This study's findings underscore the heightened vulnerability of hospitalized COVID-19 patients with cancer, revealing a higher mortality rate, longer hospital stays, and an unstructured pattern of care that reflects the complexity of managing severely ill patients during a public health crisis like the COVID-19 pandemic. |
| Multi-site study of communities with PFAS-contaminated drinking water: Methods, demographics, and PFAS serum concentrations
Pavuk M , Adgate JL , Bartell SM , Bell E , Brown LM , Laumbach RJ , Schaider LA , van T' Erve TJ , Bailey JM , Botelho JC , Calafat AM , Cutler CR , Forand S , Graber JM , James-Todd T , Jeddy Z , Kato K , Mowry N , Nair AS , Ohman-Strickland P , Rago P , Schaefer AM , Starling AP , Vieira VM , Weems MM , Wiant KF , Bove FJ . Environ Int 2025 202 109589 A nationwide cross-sectional study led by the Agency for Toxic Substances and Disease Registry in collaboration with research and community partners, was designed to investigate health outcomes linked to per- and polyfluoroalkyl substances (PFAS) exposure among residents of communities with contaminated drinking water. The objective was to describe the study design, methods, participant demographics, and PFAS serum concentrations. From 2019 to 2023, adult (18+) and child (ages 4-17) participants were recruited from communities with past or ongoing PFAS contamination of drinking water across eight sites in California, Colorado, Massachusetts, Michigan, New Hampshire, New York, New Jersey, and Pennsylvania. Data on demographics, lifestyle factors, and residential, occupational, and medical history were collected via questionnaires. Extensive clinical tests assessed cardiometabolic, liver, thyroid, kidney, glycemic, and immune parameters. Neurobehavioral tests were administered to children (ages 5-17). PFAS quantified in serum included MeFOSAA, PFHxS, PFOS, PFOA, PFNA, PFDA, and PFUnDA. Serum, whole blood, and urine samples were banked for future analyses. The study enrolled 5826 adults (geometric mean age: 53.6 years; 60.2 % female; 77.2 % non-Hispanic White) and 710 children (geometric mean age: 10.7 years; 48.5 % female; 69 % non-Hispanic White). Compared with NHANES data (2017-2020), adults showed elevated geometric mean concentrations of PFHxS and PFOA; only PFHxS was elevated in children. These serum concentrations reflect a wide range of PFAS exposures in communities affected by contamination from firefighting activities and industrial emissions, and other sources. This large study is a valuable resource for exploring associations between PFAS exposure and health effects in adults and children. |
| High-dose isoniazid for TB with low-to-moderate isoniazid resistance after 1 week of treatment
Ranganathan UD , Smith-Jeffcoat SE , Balaji S , Devika K , Nair D , Devaleenal Daniel B , Srinivasan R , Baskaran M , RaviKumar D , Sangamithirai D , Radhika G , Mangalambal G , Lavanya J , Maheswaran K , Kumar S , Sridhar R , Tripathy S , Swaminathan S , Eisenach KD , Cegielski JP . JAC Antimicrob Resist 2025 7 (3) dlaf072
OBJECTIVES: To evaluate the effect of high-dose isoniazid in patients with isoniazid-resistant TB by its bactericidal activity after 1 or more weeks of treatment. SUBJECTS AND METHODS: Using the rapid direct method of phenotypic drug susceptibility testing, we screened persons with positive sputum microscopy results and genotypic drug resistance for isoniazid resistance. Those with no growth at a critical concentration of 2.0 mg/L were invited to participate in a trial of high-dose isoniazid monotherapy lasting 6 days. After 3 days of no treatment, patients received isoniazid 15 mg/kg and were followed with serial quantitative sputum cultures from Days 0 to 6. RESULTS: We enrolled 15 patients after a median of 2 weeks standard first-line treatment. Their median bacillary count on Day 0 was 4.9 log(10) cfu/mL on solid agar, and the time to detection (TTD) was 200 h in liquid medium. Neither metric showed meaningful change in bacillary burden over 6 days, declining by a non-significant 0.08 log(10) cfu/mL/d on solid media and slowing TTD by 23 h. These effects did not differ by degree of isoniazid resistance or specific Inhibin Subunit Alpha (inhA) gene mutations. CONCLUSIONS: The utility of high-dose isoniazid against low-level isoniazid resistance beyond the first 2 weeks of chemotherapy should be reconsidered. |
| Impacts of ground-based ULV pyrethroid sprays on abundance and age structure of the Zika vector, Aedes aegypti (Diptera: Culicidae), in urban Arizona
Walker K , Gouge D , Williamson D , Arnbrister J , Joy T , Will J , Townsend J , Li S , Nair S , Brophy M , Madera Garcia V , Ernst K , Carrière Y , Riehle M . J Med Entomol 2025 Aedes aegypti (L.), the primary mosquito vector of arboviruses such as dengue and Zika, has a global distribution that includes the southern United States. Control of this peridomestic mosquito is challenging. Ultra-low volume (ULV) pyrethroid sprays are commonly used against adult mosquitoes to break transmission during a disease outbreak, although efficacy data are limited. This study examined the impacts of ULV sprays on Ae. aegypti vectorial capacity as measured by vector abundance and age structure in two cities in Maricopa County, AZ with robust Ae. aegypti populations and a well-developed vector management program. We assessed impacts of routine ULV applications conducted by Maricopa Vector Control Division during the summer rainy seasons of 2017 to 2019 to determine whether existing practices mainly targeting Culex spp. also suppressed Ae. aegypti. The insecticide formulations applied for Culex spp. control (Duet and Permanone 30-30) did not affect Ae. aegypti abundance, but Duet applications slightly reduced female mosquito age. Deltagard, the insecticide product used specifically against Ae. aegypti, was only applied three times in 2018 over small areas, so efficacy assessment was difficult. Deltagard was associated with a small decline in Ae. aegypti abundance. CDC bottle bioassays of Ae. aegypti collected in the study area showed resistance to permethrin and deltamethrin. Overall, the lack of significant mosquito population suppression or age structure changes after insecticide applications suggest that current tools used by Maricopa Vector Control Division are unlikely to effectively control Ae. aegypti populations in the event of a disease outbreak. |
| Social determinants of health and unmet needs for services among young adults with HIV: Medical Monitoring Project, 2018-2021
Marcus R , Dasgupta S , Taussig J , Tie Y , Nair P , Prejean J . J Acquir Immune Defic Syndr 2025 BACKGROUND: Persons aged 13-24 years are a priority population in the National HIV/AIDS Strategy. Young adults with HIV have poorer health outcomes-including not being retained in care, antiretroviral nonadherence, and not being virally suppressed-than other persons with HIV. SETTING: Centers for Disease Control and Prevention's Medical Monitoring Project data collected June 2018 through May 2022. METHODS: We compared demographic characteristics, social determinants of health (SDOH), and mental health between persons aged 18-24 years with HIV versus persons aged ≥25 years with HIV. Among those aged 18-24 years, we analyzed total and unmet needs for ancillary services, defined as those that support care engagement, viral suppression, and overall health and well-being among people with HIV. RESULTS: Persons aged 18-24 years were more likely to have a household income <100% of the federal poverty level (48% vs. 39%), and experience unstable housing or homelessness (37% vs. 18%) or hunger/food insecurity (29% vs. 18%) than those aged ≥25 years. Persons aged 18-24 years had higher median HIV stigma scores (40 vs. 29) and were more likely to experience symptoms of generalized anxiety disorder (21% vs. 15%) than those aged ≥25 years. Of persons aged 18-24 years, 96% had a need for ≥1 ancillary service, of whom 56% had ≥1 unmet need; unmet needs were highest for subsistence services (53%) and non-HIV medical services (41%). CONCLUSIONS: Addressing unmet needs for subsistence and non-HIV medical services could help reduce disparities in SDOH and mental health that drive inequities in health outcomes among persons with HIV aged 18-24 years. |
| Amyotrophic lateral sclerosis estimated prevalence cases from 2022 to 2030, data from the national ALS Registry
Mehta P , Raymond J , Nair T , Han M , Berry J , Punjani R , Larson T , Mohidul S , Horton DK . Amyotroph Lateral Scler Frontotemporal Degener 2025 1-6 Objective: To estimate the projected number of ALS cases in the United States from 2022 to 2030. Amyotrophic lateral sclerosis (ALS) is a progressive and fatal neuromuscular disease with no known cure. Because ALS is not a notifiable disease in the United States, the accurate ascertainment of prevalent ALS cases continues to be a challenge. To overcome this, the National ALS Registry (Registry) uses novel methods to estimate newly diagnosed and existing cases in the United States. Methods: We estimated ALS prevalence retrospectively from 2022 to 2024 and prospectively from 2025 to 2030 using prevalence obtained through previous CRC analyses on 2018 Registry data (the most current data available) to generate projected observed, missing, and total cases. Projected prevalent cases were then stratified by age, race, and sex. Results: The number of estimated ALS cases in 2022 was 32,893. By 2030, projected cases increase more than 10%, to 36,308. The largest increase occurs for the population ages 66 years and older, with a 25% increase (from 16,349 cases in 2022 to 20,438 cases in 2030). The projected number of cases classified as "other race" will increase by 15% (from 2,473 cases in 2022 to 2,854 cases in 2030). Conclusions: These estimates of projected ALS cases reflect anticipated changes in the underlying demographics of the United States. Our projections are likely an underestimation because emerging therapeutics and improved healthcare will improve survivability in this vulnerable population. These results should inform policy to more efficiently allocate resources for ALS patients and programs. |
| The use of HIV prevention strategies and services reported by black women with a risk for and with HIV in the United States
Reaves T , Lewis R , Dasgupta S , Lyons SJ , Tie Y , Nair P , Carree T , Hu X , Raiford JL , Marcus R . AIDS Behav 2024 Black women are disproportionately affected by HIV. We analyzed data from two Centers for Disease Control and Prevention's HIV surveillance systems to better understand HIV prevention strategies used by Black women at risk for and with HIV to help inform efforts to end HIV. Among sexually active Black women, we analyzed 2019 National HIV Behavioral Surveillance data on women without HIV (n = 4,033) and 2018-2020 Medical Monitoring Project data on women with HIV (n = 967). We reported percentages of HIV prevention strategies and services used and assessed differences between groups using Rao-Scott chi-square tests. Among Black women without HIV, 39% were aware of pre-exposure prophylaxis (PrEP); of these, 7% discussed PrEP with a healthcare provider, and 1% used PrEP in the past 12 months. Approximately 16% used a condom with their last sex partner; 36% reported that their last sex partner did not have HIV. Among Black women with HIV, 58% had condom-protected sex, 56% reported having sex while having sustained viral suppression, 3% had condomless sex with a partner on PrEP, and 24% had sex with a partner with HIV; 12% engaged in sex without using any HIV prevention strategy. HIV prevention strategies and services differed by selected demographic characteristics and social determinants of health. Although many sexually active Black women reported using HIV prevention strategies, there is room for improvement among those at risk for or with HIV. Tailoring prevention efforts based on individual needs and circumstances is essential for ending the HIV epidemic. |
| Post-licensure safety surveillance of 20-valent pneumococcal conjugate vaccine (PCV20) among US adults in the Vaccine Adverse Event Reporting System (VAERS)
Oliveira M , Marquez P , Ennulat C , Blanc P , Welsh K , Nair N , Taminato M , Moro PL . Drug Saf 2024
BACKGROUND: On June 8, 2021, a new 20-valent pneumococcal conjugate vaccine (PCV20, PREVNAR 20(®), Pfizer, Inc.) was licensed for use in adults aged ≥ 18 years by the US Food and Drug Administration (FDA). OBJECTIVE: To describe reports to the Vaccine Adverse Event Reporting System (VAERS) after administration of the 20-valent pneumococcal conjugate vaccine in adults. METHODS: We searched the VAERS for reports of adverse events involving persons aged ≥ 19 years who received PCV20 during October 20, 2021, through December 31, 2023. Our evaluation included automated analysis of reports, clinical review of serious reports and pre-specified events of special interest, empirical Bayesian data mining to assess for disproportionate reporting, and estimation of reporting rates for reports of Guillain-Barré syndrome (GBS). RESULTS: The VAERS received 1976 reports after PCV20 administration in persons aged ≥ 19 years (6% of reports involved serious events). The most common adverse events among persons aged 19-64 years (n = 798) were injection-site reactions (231, 29%), pain (134, 17%), erythema (118, 15%), and fever (117, 15%). For persons aged ≥ 65 years (n = 1178), the most common adverse events were injection-site reactions (417, 35%), pain (180, 15%), pain in extremity (162, 14%), and erythema (158, 13%). A data mining alert (EB05 = 3.812) for the MedDRA Preferred Term "Guillain-Barre syndrome" was observed for serious reports. Clinical review verified 11 of 20 GBS reports; 7/11 vaccine recipients were aged ≥ 65 years. Among the 11 verified cases, the median time from vaccination to symptom onset was 14 days. Five persons received another vaccine on the same visit. The reporting rate of GBS after PCV20 receipt was 0.5 cases per million doses distributed. No other safety concern was identified. CONCLUSIONS: During the period of this post-licensure review of PCV20, we found most reports were non-serious and comprised mostly local and systemic (e.g., fever) reactions consistent with prelicensure studies. In serious reports, we also identified a data mining alert for GBS after receipt of PCV20, which Centers for Disease Control and Prevention and the FDA are investigating further. No other new or unexpected safety concern was identified. |
| Infectious etiology of intussusception in Indian children less than 2 years old: a matched case-control analysis
Praharaj I , Reddy SN , Nair NP , Tate JE , Giri S , Thiyagarajan V , Mohan VR , Revathi R , Maheshwari K , Hemavathy P , Kumar N , Gupte MD , Arora R , Senthamizh S , Mekala S , Goru KB , Pamu P , Badur M , Pradhan S , Dash M , Mohakud NK , Ray RK , Gathwala G , Gupta M , Kanojia R , Gupta R , Goyal S , Sharma P , Mathew MA , Kochukaleekal Jacob TJ , Sundaram B , Girish Kumar CP , Dorairaj P , Pitchumani R , Maniam R , Kumaravel S , Jain H , Goswami JK , Wakhlu A , Gupta V , Liu J , Houpt ER , Parashar UD , Kang G . Gut Pathog 2024 16 (1) 61 BACKGROUND: Enteric infections are hypothesized to be associated with intussusception in children. A small increase in intussusception following rotavirus vaccination has been seen in some settings. We conducted post-marketing surveillance for intussusception following rotavirus vaccine, Rotavac introduction in India and evaluated association of intussusception with enteric pathogens. METHODS: In a case-control study nested within a large sentinel hospital-based surveillance program in India, stool samples from 272 children aged less than 2 years admitted for intussusception and 272 age-, gender- and location-matched controls were evaluated with Taqman array card based molecular assays to detect enteric viruses, bacterial enteropathogens and parasites. Matched case-control analysis with conditional logistic regression evaluated association of enteropathogens with intussusception. Population attributable fractions (PAF) were calculated for enteropathogens significantly associated with intussusception. RESULTS: The most prevalent enteropathogens in cases and controls were enteroaggregative Escherichia coli, adenovirus 40/41, adenovirus C serotypes and enteroviruses. Children with intussusception were more likely to harbor adenovirus C serotypes (adjusted odds-ratio (aOR) = 1.74; 95% confidence interval (CI) 1.06-2.87) and enteroviruses (aOR = 1.77; 95% CI 1.05-2.97) than controls. Rotavirus was not associated with increased intussusception risk. Adenovirus C (PAF = 16.9%; 95% CI 4.7% - 27.6%) and enteroviruses (PAF = 14.7%; 95% CI 4.2% - 24.1%) had the highest population attributable fraction for intussusception. CONCLUSION: Adenovirus C serotypes and enteroviruses were significantly associated with intussusception in Indian children. Rotavirus was not associated with risk of intussusception. |
| Dimensions of wisdom perception across twelve countries on five continents
Rudnev M , Barrett HC , Buckwalter W , Machery E , Stich S , Barr K , Bencherifa A , Clancy RF , Crone DL , Deguchi Y , Fabiano E , Fodeman AD , Guennoun B , Halamová J , Hashimoto T , Homan J , Kanovský M , Karasawa K , Kim H , Kiper J , Lee M , Liu X , Mitova V , Nair RB , Pantovic L , Porter B , Quintanilla P , Reijer J , Romero PP , Singh P , Tber S , Wilkenfeld DA , Yi L , Grossmann I . Nat Commun 2024 15 (1) 6375 Wisdom is the hallmark of social judgment, but how people across cultures recognize wisdom remains unclear-distinct philosophical traditions suggest different views of wisdom's cardinal features. We explore perception of wise minds across 16 socio-economically and culturally diverse convenience samples from 12 countries. Participants assessed wisdom exemplars, non-exemplars, and themselves on 19 socio-cognitive characteristics, subsequently rating targets' wisdom, knowledge, and understanding. Analyses reveal two positively related dimensions-Reflective Orientation and Socio-Emotional Awareness. These dimensions are consistent across the studied cultural regions and interact when informing wisdom ratings: wisest targets-as perceived by participants-score high on both dimensions, whereas the least wise are not reflective but moderately socio-emotional. Additionally, individuals view themselves as less reflective but more socio-emotionally aware than most wisdom exemplars. Our findings expand folk psychology and social judgment research beyond the Global North, showing how individuals perceive desirable cognitive and socio-emotional qualities, and contribute to an understanding of mind perception. |
| Tinnitus after COVID-19 vaccination: Findings from the vaccine adverse event reporting system and the vaccine safety datalink
Yih WK , Duffy J , Su JR , Bazel S , Fireman B , Hurley L , Maro JC , Marquez P , Moro P , Nair N , Nelson J , Smith N , Sundaram M , Vasquez-Benitez G , Weintraub E , Xu S , Shimabukuro T . Am J Otolaryngol 2024 45 (6) 104448
PURPOSE: To assess the occurrence of tinnitus following COVID-19 vaccination using data mining and descriptive analyses in two U.S. vaccine safety surveillance systems. METHODS: Reports of tinnitus after COVID-19 vaccination to the Vaccine Adverse Event Reporting System (VAERS) from 2020 through 2024 were examined using empirical Bayesian data mining and by calculating reporting rates. In the Vaccine Safety Datalink (VSD) population, ICD-10 coded post-vaccination medical visits were examined using tree-based data mining, and tinnitus visit incidence rates during post-vaccination days 1-140 were calculated by age group for COVID-19 vaccines and for comparison, influenza vaccine. RESULTS: VAERS data mining did not find disproportionate reporting of tinnitus for any COVID-19 vaccine. VAERS received up to 84.82 tinnitus reports per million COVID-19 vaccine doses administered. VSD tree-based data mining found no signals for tinnitus. VSD tinnitus visit incidence rates after COVID-19 vaccines were similar to those after influenza vaccine except for the group aged ≥65 years (Moderna COVID-19 vaccine, 165 per 10,000 person-years; Pfizer-BioNTech COVID-19 vaccine, 154; influenza vaccine, 135). CONCLUSIONS: Overall, these findings do not support an increased risk of tinnitus following COVID-19 vaccination but cannot definitively exclude the possibility. Descriptive comparisons between COVID-19 and influenza vaccines were limited by lack of adjustment for potential confounding factors. |
| Racial disparities in the diagnosis and prognosis of ALS patients in the United States
Raymond J , Nair T , Gwathmey KG , Larson T , Horton DK , Mehta P . J Racial Ethn Health Disparities 2024 BACKGROUND: Amyotrophic lateral sclerosis (ALS) is a progressive, fatal disease with largely unknown etiology. This study compares racial differences in clinical characteristics of ALS patients enrolled in the National ALS Registry (Registry). METHODS: Data from ALS patients who completed the Registry's online clinical survey during 2013-2022 were analyzed to determine characteristics such as site of onset, associated symptoms, time of symptom onset to diagnosis, and pharmacological and non-pharmacological interventions for White, Black, and other race patients. RESULTS: Surveys were completed by 4242 participants. Findings revealed that Black ALS patients were more likely to be diagnosed at a younger age, to have arm or hand initial site of onset, and to experience pneumonia than were White ALS patients. ALS patients of other races were more likely than White ALS patients to be diagnosed at a younger age and to experience twitching. The mean interval between the first sign of weakness and an ALS diagnosis for Black patients was almost 24 months, statistically greater than that of White (p = 0.0374; 16 months) and other race patients (p = 0.0518; 15.8 months). The mean interval between problems with speech until diagnosis was shorter for White patients (6.3 months) than for Black patients (17.7 months) and other race patients (14.8 months). CONCLUSIONS AND RELEVANCE: Registry data shows racial disparities still exist in the diagnosis and clinical characteristics of ALS patients. Increased recruitment of non-White ALS patients and better characterization of symptom onset between races might aid clinicians in diagnosing ALS sooner, leading to earlier therapeutic interventions. |
| Prevalence of ALS in all 50 states in the United States, data from the National ALS Registry, 2011-2018
Mehta P , Raymond J , Nair T , Han M , Punjani R , Larson T , Berry J , Mohidul S , Horton DK . Amyotroph Lateral Scler Frontotemporal Degener 2024 1-7 Objective: To summarize the prevalence of ALS in all 50 states and Washington, DC in the United States from 2011 to 2018 using data collected and analyzed by the National ALS Registry. In October 2010, the federal Agency for Toxic Substances and Disease Registry (ATSDR) launched the congressionally mandated Registry to determine the incidence and prevalence of ALS within the USA, characterize the demographics of persons with ALS, and identify the potential risk factors for the disease. This is the first analysis of state-level ALS prevalence estimates. Methods: ALS is not a notifiable disease in the USA, so the Registry uses a two-pronged approach to identify cases. The first approach uses existing national administrative databases (Medicare, Veterans Health Administration, and Veterans Benefits Administration). The second method uses a secure web portal to gather voluntary participant data and identify cases not included in the national administrative databases. Results: State-level age-adjusted average prevalence from 2011-2018 ranged from 2.6 per 100,000 persons (Hawaii) to 7.8 per 100,000 persons (Vermont), with an average of 4.4 per 100,000 persons in the US. New England and Midwest regions had higher prevalence rates than the national average. Conclusions: These findings summarize the prevalence of ALS for all 50 states from 2011 to 2018. This is a continuing effort to identify ALS cases on a national population basis. The establishment of the National ALS Registry has allowed for epidemiological trends of this disease and the assessment of potential risk factors that could cause ALS. |
| Evaluation of hospital-onset bacteraemia and fungaemia in the USA as a potential healthcare quality measure: a cross-sectional study
Leekha S , Robinson GL , Jacob JT , Fridkin S , Shane A , Sick-Samuels A , Milstone AM , Nair R , Perencevich E , Puig-Asensio M , Kobayashi T , Mayer J , Lewis J , Bleasdale S , Wenzler E , Mena Lora AJ , Baghdadi J , Schrank GM , Wilber E , Aldredge AA , Sharp J , Dyer KE , Kendrick L , Ambalam V , Borgetti S , Carmack A , Gushiken A , Patel A , Reddy S , Brown CH , Dantes RB , Harris AD . BMJ Qual Saf 2024 BACKGROUND: Hospital-onset bacteraemia and fungaemia (HOB) is being explored as a surveillance and quality metric. The objectives of the current study were to determine sources and preventability of HOB in hospitalised patients in the USA and to identify factors associated with perceived preventability. METHODS: We conducted a cross-sectional study of HOB events at 10 academic and three community hospitals using structured chart review. HOB was defined as a blood culture on or after hospital day 4 with growth of one or more bacterial or fungal organisms. HOB events were stratified by commensal and non-commensal organisms. Medical resident physicians, infectious disease fellows or infection preventionists reviewed charts to determine HOB source, and infectious disease physicians with training in infection prevention/hospital epidemiology rated preventability from 1 to 6 (1=definitely preventable to 6=definitely not preventable) using a structured guide. Ratings of 1-3 were collectively considered 'potentially preventable' and 4-6 'potentially not preventable'. RESULTS: Among 1789 HOB events with non-commensal organisms, gastrointestinal (including neutropenic translocation) (35%) and endovascular (32%) were the most common sources. Overall, 636/1789 (36%) non-commensal and 238/320 (74%) commensal HOB events were rated potentially preventable. In logistic regression analysis among non-commensal HOB events, events attributed to intravascular catheter-related infection, indwelling urinary catheter-related infection and surgical site infection had higher odds of being rated preventable while events with neutropenia, immunosuppression, gastrointestinal sources, polymicrobial cultures and previous positive blood culture in the same admission had lower odds of being rated preventable, compared with events without those attributes. Of 636 potentially preventable non-commensal HOB events, 47% were endovascular in origin, followed by gastrointestinal, respiratory and urinary sources; approximately 40% of those events would not be captured through existing healthcare-associated infection surveillance. DISCUSSION: Factors identified as associated with higher or lower preventability should be used to guide inclusion, exclusion and risk adjustment for an HOB-related quality metric. |
| Comprehensive Search for Novel Circulating miRNAs and Axon Guidance Pathway Proteins Associated with Risk of End Stage Kidney Disease in Diabetes.
Satake E , Saulnier PJ , Kobayashi H , Gupta MK , Looker HC , Wilson JM , Md Dom ZI , Ihara K , O'Neil K , Krolewski B , Pipino C , Pavkov ME , Nair V , Bitzer M , Niewczas MA , Kretzler M , Mauer M , Doria A , Najafian B , Kulkarni RN , Duffin KL , Pezzolesi MG , Kahn CR , Nelson RG , Krolewski AS . J Am Soc Nephrol 2021 32 (9) 2331-2351
BACKGROUND: Mechanisms underlying the pro gression of diabetic kidney disease to ESKD are not fully understood. METHODS: We performed global microRNA (miRNA) analysis on plasma from two cohorts consisting of 375 individuals with type 1 and type 2 diabetes with late diabetic kidney disease, and targeted proteomics analysis on plasma from four cohorts consisting of 746 individuals with late and early diabetic kidney disease. We examined structural lesions in kidney biopsy specimens from the 105 individuals with early diabetic kidney disease. Human umbilical vein endothelial cells were used to assess the effects of miRNA mimics or inhibitors on regulation of candidate proteins. RESULTS: In the late diabetic kidney disease cohorts, we identified 17 circulating miRNAs, represented by four exemplars (miR-1287-5p, miR-197-5p, miR-339-5p, and miR-328-3p), that were strongly associated with 10-year risk of ESKD. These miRNAs targeted proteins in the axon guidance pathway. Circulating levels of six of these proteins-most notably, EFNA4 and EPHA2-were strongly associated with 10-year risk of ESKD in all cohorts. Furthermore, circulating levels of these proteins correlated with severity of structural lesions in kidney biopsy specimens. In contrast, expression levels of genes encoding these proteins had no apparent effects on the lesions. In in vitro experiments, mimics of miR-1287-5p and miR-197-5p and inhibitors of miR-339-5p and miR-328-3p upregulated concentrations of EPHA2 in either cell lysate, supernatant, or both. CONCLUSIONS: This study reveals novel mechanisms involved in progression to ESKD and points to the importance of systemic factors in the development of diabetic kidney disease. Some circulating miRNAs and axon guidance pathway proteins represent potential targets for new therapies to prevent and treat this condition. |
| An evaluation of the ecological niche of Orf virus (Poxviridae): Challenges of distinguishing broad niches from no niches
Nair RR , Nakazawa Y , Peterson AT . PLoS One 2024 19 (1) e0293312 Contagious ecthyma is a skin disease, caused by Orf virus, creating great economic threats to livestock farming worldwide. Zoonotic potential of this disease has gained recent attention owing to the re-emergence of disease in several parts of the world. Increased public health concern emphasizes the need for a predictive understanding of the geographic distributional potential of Orf virus. Here, we mapped the current distribution using occurrence records, and estimated the ecological niche in both geographical and environmental spaces. Twenty modeling experiments, resulting from two- and three-partition models, were performed to choose the candidate models that best represent the geographic distributional potential of Orf virus. For all of our models, it was possible to reject the null hypothesis of predictive performance no better than random expectations. However, statistical significance must be accompanied by sufficiently good predictive performance if a model is to be useful. In our case, omission of known distribution of the virus was noticed in all Maxent models, indicating inferior quality of our models. This conclusion was further confirmed by the independent final evaluation, using occurrence records sourced from the Centre for Agriculture and Bioscience International. Minimum volume ellipsoid (MVE) models indicated the broad range of environmental conditions under which Orf virus infections are found. The excluded climatic conditions from MVEs could not be considered as unsuitable owing to the broad distribution of Orf virus. These results suggest two possibilities: that the niche models fail to identify niche limits that constrain the virus, or that the virus has no detectable niche, as it can be found throughout the geographic distributions of its hosts. This potential limitation of component-based pathogen-only ENMs is discussed in detail. |
| Burden of respiratory syncytial virus-associated acute respiratory infections during pregnancy
Kenmoe S , Chu HY , Dawood FS , Milucky J , Kittikraisak W , Matthewson H , Kulkarni D , Suntarattiwong P , Frivold C , Mohanty S , Havers F , Li Y , Nair H . J Infect Dis 2023 INTRODUCTION: With the licensure of maternal RSV vaccines in Europe and USA, data are needed to better characterize the burden of respiratory syncytial virus (RSV)-associated acute respiratory infections (ARI) in pregnancy. This study aims to determine among pregnant individuals the proportion of ARI testing positive for RSV and RSV incidence rate, RSV-associated hospitalizations, deaths, and perinatal outcomes. METHODS: We conducted a systematic review following PRISMA 2020 guidelines using five databases (Medline, Embase, Global Health, Web of Science and Global Index Medicus) and included additional unpublished data. Pregnant individuals with respiratory infections who had respiratory samples tested for RSV were included. We used a random-effects meta-analysis to generate overall proportions and rate estimates across studies. RESULTS: Eleven studies with pregnant individuals recruited between 2010 and 2022 were identified, most of which recruited pregnant individuals in community, inpatient and outpatient settings. Among 8126 pregnant individuals, the proportion with respiratory infections that tested positive for RSV ranged from 0.9% to 10.7%, with a meta-estimate of 3.4% (95% CI: 1.9; 54). The pooled incidence rate of RSV infection episodes among pregnant individuals was 26.0 (15.8; 36.2) per 1000 person-years. RSV hospitalization rates reported in two studies were 2.4 and 3.0 per 1000 person-years. Of five studies that ascertained RSV-associated deaths among 4708 pregnant individuals, no deaths were reported. Three studies comparing RSV-positive and RSV-negative pregnant individuals found no difference in odds of miscarriage, stillbirth, low birth weight, and small for gestational age. RSV-positive pregnant individuals had higher odds of preterm delivery (odds ratio 3.6 [1.3; 10.3]). CONCLUSION: Data on RSV-associated hospitalization incidence rates are limited but available estimates are lower than those reported in older adults and young children. As countries debate whether to include RSV vaccines in maternal vaccination programs, which are primarily intended to protect infants, this information could be useful in shaping vaccine policy decisions. |
| Global diversity and antimicrobial resistance of typhoid fever pathogens: Insights from a meta-analysis of 13,000 Salmonella Typhi genomes
Carey ME , Dyson ZA , Ingle DJ , Amir A , Aworh MK , Chattaway MA , Chew KL , Crump JA , Feasey NA , Howden BP , Keddy KH , Maes M , Parry CM , Van Puyvelde S , Webb HE , Afolayan AO , Alexander AP , Anandan S , Andrews JR , Ashton PM , Basnyat B , Bavdekar A , Bogoch II , Clemens JD , da Silva KE , De A , de Ligt J , Diaz Guevara PL , Dolecek C , Dutta S , Ehlers MM , Francois Watkins L , Garrett DO , Godbole G , Gordon MA , Greenhill AR , Griffin C , Gupta M , Hendriksen RS , Heyderman RS , Hooda Y , Hormazabal JC , Ikhimiukor OO , Iqbal J , Jacob JJ , Jenkins C , Jinka DR , John J , Kang G , Kanteh A , Kapil A , Karkey A , Kariuki S , Kingsley RA , Koshy RM , Lauer AC , Levine MM , Lingegowda RK , Luby SP , Mackenzie GA , Mashe T , Msefula C , Mutreja A , Nagaraj G , Nagaraj S , Nair S , Naseri TK , Nimarota-Brown S , Njamkepo E , Okeke IN , Perumal SPB , Pollard AJ , Pragasam AK , Qadri F , Qamar FN , Rahman SIA , Rambocus SD , Rasko DA , Ray P , Robins-Browne R , Rongsen-Chandola T , Rutanga JP , Saha SK , Saha S , Saigal K , Sajib MSI , Seidman JC , Shakya J , Shamanna V , Shastri J , Shrestha R , Sia S , Sikorski MJ , Singh A , Smith AM , Tagg KA , Tamrakar D , Tanmoy AM , Thomas M , Thomas MS , Thomsen R , Thomson NR , Tupua S , Vaidya K , Valcanis M , Veeraraghavan B , Weill FX , Wright J , Dougan G , Argimón S , Keane JA , Aanensen DM , Baker S , Holt KE . Elife 2023 12
BACKGROUND: The Global Typhoid Genomics Consortium was established to bring together the typhoid research community to aggregate and analyse Salmonella enterica serovar Typhi (Typhi) genomic data to inform public health action. This analysis, which marks 22 years since the publication of the first Typhi genome, represents the largest Typhi genome sequence collection to date (n=13,000). METHODS: This is a meta-analysis of global genotype and antimicrobial resistance (AMR) determinants extracted from previously sequenced genome data and analysed using consistent methods implemented in open analysis platforms GenoTyphi and Pathogenwatch. RESULTS: Compared with previous global snapshots, the data highlight that genotype 4.3.1 (H58) has not spread beyond Asia and Eastern/Southern Africa; in other regions, distinct genotypes dominate and have independently evolved AMR. Data gaps remain in many parts of the world, and we show the potential of travel-associated sequences to provide informal 'sentinel' surveillance for such locations. The data indicate that ciprofloxacin non-susceptibility (>1 resistance determinant) is widespread across geographies and genotypes, with high-level ciprofloxacin resistance (≥3 determinants) reaching 20% prevalence in South Asia. Extensively drug-resistant (XDR) typhoid has become dominant in Pakistan (70% in 2020) but has not yet become established elsewhere. Ceftriaxone resistance has emerged in eight non-XDR genotypes, including a ciprofloxacin-resistant lineage (4.3.1.2.1) in India. Azithromycin resistance mutations were detected at low prevalence in South Asia, including in two common ciprofloxacin-resistant genotypes. CONCLUSIONS: The consortium's aim is to encourage continued data sharing and collaboration to monitor the emergence and global spread of AMR Typhi, and to inform decision-making around the introduction of typhoid conjugate vaccines (TCVs) and other prevention and control strategies. FUNDING: No specific funding was awarded for this meta-analysis. Coordinators were supported by fellowships from the European Union (ZAD received funding from the European Union's Horizon 2020 research and innovation programme under the Marie Sklodowska-Curie grant agreement No 845681), the Wellcome Trust (SB, Wellcome Trust Senior Fellowship), and the National Health and Medical Research Council (DJI is supported by an NHMRC Investigator Grant [GNT1195210]). | Salmonella Typhi (Typhi) is a type of bacteria that causes typhoid fever. More than 110,000 people die from this disease each year, predominantly in areas of sub-Saharan Africa and South Asia with limited access to safe water and sanitation. Clinicians use antibiotics to treat typhoid fever, but scientists worry that the spread of antimicrobial-resistant Typhi could render the drugs ineffective, leading to increased typhoid fever mortality. The World Health Organization has prequalified two vaccines that are highly effective in preventing typhoid fever and may also help limit the emergence and spread of resistant Typhi. In low resource settings, public health officials must make difficult trade-off decisions about which new vaccines to introduce into already crowded immunization schedules. Understanding the local burden of antimicrobial-resistant Typhi and how it is spreading could help inform their actions. The Global Typhoid Genomics Consortium analyzed 13,000 Typhi genomes from 110 countries to provide a global overview of genetic diversity and antimicrobial-resistant patterns. The analysis showed great genetic diversity of the different strains between countries and regions. For example, the H58 Typhi variant, which is often drug-resistant, has spread rapidly through Asia and Eastern and Southern Africa, but is less common in other regions. However, distinct strains of other drug-resistant Typhi have emerged in other parts of the world. Resistance to the antibiotic ciprofloxacin was widespread and accounted for over 85% of cases in South Africa. Around 70% of Typhi from Pakistan were extensively drug-resistant in 2020, but these hard-to-treat variants have not yet become established elsewhere. Variants that are resistant to both ciprofloxacin and ceftriaxone have been identified, and azithromycin resistance has also appeared in several different variants across South Asia. The Consortium’s analyses provide valuable insights into the global distribution and transmission patterns of drug-resistant Typhi. Limited genetic data were available fromseveral regions, but data from travel-associated cases helped fill some regional gaps. These findings may help serve as a starting point for collective sharing and analyses of genetic data to inform local public health action. Funders need to provide ongoing supportto help fill global surveillance data gaps. | eng |
| Notes from the field: Safety monitoring of Novavax COVID-19 vaccine among persons aged 12 years - United States, July 13, 2022-March 13, 2023
Romanson B , Moro PL , Su JR , Marquez P , Nair N , Day B , DeSantis A , Shimabukuro TT . MMWR Morb Mortal Wkly Rep 2023 72 (31) 850-851 The NVX-CoV2373 (Novavax) COVID-19 vaccine is a recombinant spike protein nanoparticle vaccine with Matrix-M adjuvant. Novavax is authorized and recommended as a primary 2-dose monovalent vaccination series in persons aged ≥12 years to prevent COVID-19 and as a monovalent booster dose in persons aged ≥18 years who are unable to or unwilling to receive an mRNA COVID-19 bivalent vaccine (1). | | Top | | Investigation and Outcomes | During July 13, 2022–March 13, 2023, a total of 69,227 Novavax doses were administered to persons aged ≥12 years in the United States, and 230 reports of adverse events (AEs) after Novavax vaccination were received by the Vaccine Adverse Event Reporting System (VAERS) (2). The median age of patients in the reports was 45 years (IQR = 31–61 years); 152 (66.1%) reports concerned females, and 104 (45.2%) concerned non-Hispanic White persons (Table). Within the study period, VAERS received no reports concerning pregnant women. Most VAERS reports (211; 91.7%) were classified as nonserious.* The most commonly reported AEs included dizziness (33; 14.3%), fatigue (26; 11.3%), and headache (25; 10.9%). |
| Demographic and co-morbidity characteristics of patients tested for SARS-CoV-2 from March 2020 to January 2022 in a national clinical research network: results from PCORnet (preprint)
Block JP , Marsolo KA , Nagavedu K , Bailey LC , Boehmer TK , Fearrington J , Harris AM , Garrett N , Goodman AB , Gundlapalli AV , Kaushal R , Kho A , McTigue KM , Nair VP , Puro J , Shenkman E , Weiner MG , Williams N , Carton TW . medRxiv 2023 18 Background: Prior studies have documented differences in the age, racial, and ethnic characteristics among patients with SARS-CoV-2 infection. However, little is known about how these characteristics changed over time during the pandemic and whether racial, ethnic, and age disparities evident early in the pandemic were persistent over time. This study reports on trends in SARS-CoV-2 infections among U.S. adults from March 1, 2020 to January, 31 2022, using data from electronic health records. Methods and Findings: We captured repeated cross-sectional information from 43 large healthcare systems in 52 U.S. States and territories, participating in PCORnet, the National Patient-Centered Clinical Research Network. Using distributed queries executed at each participating institution, we acquired information for all patients >= 20 years of age who were tested for SARS-CoV-2 (both positive and negative results), including care setting, age, sex, race, and ethnicity by month as well as comorbidities (assessed with diagnostic codes). During this time period, 1,325,563 patients had positive (13% inpatient) and 6,705,868 patients had negative (25% inpatient) viral tests for SARS-CoV-2. Disparities in testing positive were present across racial and ethnic groups, especially in the inpatient setting. Compared to White patients, Black or African American and other race patients had relative risks for testing positive of 1.5 or greater in the inpatient setting for 12 of the 23-month study period. Compared to non-Hispanic patients, Hispanic patients had relative risks for testing positive in the inpatient setting of 1.5 or greater for 16 of 23. Ethnic and racial differences were present in emergency department and ambulatory settings but were less common across time than in inpatient settings. Trends in infections by age group demonstrated higher test positivity for older patients in the inpatient setting only for most months, except for June and July of 2020, April to August 2021, and January 2022. Comorbidities were common, with much higher rates among those hospitalized; hypertension (38% of patients SARS-CoV-2 positive vs. 29% for those negative) and type 2 diabetes mellitus (22% vs. 13%) were the most common. Conclusion and Relevance: Racial and ethnic disparities changed over time among persons infected with SARS-CoV-2. These trends highlight potential underlying mechanisms, such as poor access to care and differential vaccination rates, that may have contributed to greater disparities, especially early in the pandemic. Monitoring data on characteristics of patients testing positive in real time could allow public health officials and policymakers to tailor interventions to ensure that patients and communities most in need are receiving adequate testing, mitigation strategies, and treatment. Copyright The copyright holder for this preprint is the author/funder, who has granted medRxiv a license to display the preprint in perpetuity. This article is a US Government work. It is not subject to copyright under 17 USC 105 and is also made available for use under a CC0 license. |
| Reporting Rates for VAERS Death Reports Following COVID-19 Vaccination, December 14, 2020-November 17, 2021 (preprint)
Day B , Menschik D , Thompson D , Jankosky C , Su J , Moro P , Zinderman C , Welsh K , Nair N . medRxiv 2022 07
Background: Despite widely available safety information for the COVID-19 vaccines, vaccine hesitancy remains a challenge. In some cases, vaccine hesitancy may be related to concerns about the number of reports of death to the Vaccine Adverse Event Reporting System (VAERS). Objective(s): To provide information and context about reports of death to VAERS following COVID-19 vaccination. Design(s): Descriptive study; reporting rates for VAERS death reports. Setting(s): United States; December 14, 2020, to November 17, 2021. Participant(s): COVID-19 vaccine recipients. Measurements: Reporting rates for death events per million persons vaccinated; adverse event counts; data mining signals of disproportionate reporting. Result(s): 9,201 death events were reported for COVID-19 vaccine recipients aged five years and older (or age unknown). Reporting rates for death events increased with increasing age, and males generally had higher reporting rates than females. For death events within seven days and 42 days of vaccination, respectively, observed reporting rates were lower than the expected all-cause death rates. Reporting rates for Ad26.COV2.S vaccine were generally higher than for mRNA COVID-19 vaccines, but still lower than the expected all-cause death rates. Reported adverse events were nonspecific or reflected the known leading causes of death. Limitation(s): VAERS data are subject to several limitations such as reporting bias (underreporting and stimulated reporting), missing or inaccurate information, and lack of a control group. Reported diagnoses, including deaths, are not causally verified diagnoses. Conclusion(s): Reporting rates for death events were lower than the expected all-cause mortality rates. Trends in reporting rates reflected known trends in background mortality rates. These findings do not suggest an association between vaccination and overall increased mortality. Copyright The copyright holder for this preprint is the author/funder, who has granted medRxiv a license to display the preprint in perpetuity. This article is a US Government work. It is not subject to copyright under 17 USC 105 and is also made available for use under a CC0 license. |
| Value profile for respiratory syncytial virus vaccines and monoclonal antibodies
Fleming JA , Baral R , Higgins D , Khan S , Kochar S , Li Y , Ortiz JR , Cherian T , Feikin D , Jit M , Karron RA , Limaye RJ , Marshall C , Munywoki PK , Nair H , Newhouse LC , Nyawanda BO , Pecenka C , Regan K , Srikantiah P , Wittenauer R , Zar HJ , Sparrow E . Vaccine 2023 41 Suppl 2 S7-S40 Respiratory syncytial virus (RSV) is the predominant cause of acute lower respiratory infection (ALRI) in young children worldwide, yet no licensed RSV vaccine exists to help prevent the millions of illnesses and hospitalizations and tens of thousands of young lives taken each year. Monoclonal antibody (mAb) prophylaxis exists for prevention of RSV in a small subset of very high-risk infants and young children, but the only currently licensed product is impractical, requiring multiple doses and expensive for the low-income settings where the RSV disease burden is greatest. A robust candidate pipeline exists to one day prevent RSV disease in infant and pediatric populations, and it focuses on two promising passive immunization approaches appropriate for low-income contexts: maternal RSV vaccines and long-acting infant mAbs. Licensure of one or more candidates is feasible over the next one to three years and, depending on final product characteristics, current economic models suggest both approaches are likely to be cost-effective. Strong coordination between maternal and child health programs and the Expanded Program on Immunization will be needed for effective, efficient, and equitable delivery of either intervention. This 'Vaccine Value Profile' (VVP) for RSV is intended to provide a high-level, holistic assessment of the information and data that are currently available to inform the potential public health, economic and societal value of pipeline vaccines and vaccine-like products. This VVP was developed by a working group of subject matter experts from academia, non-profit organizations, public private partnerships and multi-lateral organizations, and in collaboration with stakeholders from the WHO headquarters. All contributors have extensive expertise on various elements of the RSV VVP and collectively aimed to identify current research and knowledge gaps. The VVP was developed using only existing and publicly available information. |
| A global genomic analysis of Salmonella Concord reveals lineages with high antimicrobial resistance in Ethiopia
Cuypers WL , Meysman P , Weill FX , Hendriksen RS , Beyene G , Wain J , Nair S , Chattaway MA , Perez-Sepulveda BM , Ceyssens PJ , de Block T , Lee WWY , Pardos de la Gandara M , Kornschober C , Moran-Gilad J , Veldman KT , Cormican M , Torpdahl M , Fields PI , Černý T , Hardy L , Tack B , Mellor KC , Thomson N , Dougan G , Deborggraeve S , Jacobs J , Laukens K , Van Puyvelde S . Nat Commun 2023 14 (1) 3517
Antimicrobial resistant Salmonella enterica serovar Concord (S. Concord) is known to cause severe gastrointestinal and bloodstream infections in patients from Ethiopia and Ethiopian adoptees, and occasional records exist of S. Concord linked to other countries. The evolution and geographical distribution of S. Concord remained unclear. Here, we provide a genomic overview of the population structure and antimicrobial resistance (AMR) of S. Concord by analysing genomes from 284 historical and contemporary isolates obtained between 1944 and 2022 across the globe. We demonstrate that S. Concord is a polyphyletic serovar distributed among three Salmonella super-lineages. Super-lineage A is composed of eight S. Concord lineages, of which four are associated with multiple countries and low levels of AMR. Other lineages are restricted to Ethiopia and horizontally acquired resistance to most antimicrobials used for treating invasive Salmonella infections in low- and middle-income countries. By reconstructing complete genomes for 10 representative strains, we demonstrate the presence of AMR markers integrated in structurally diverse IncHI2 and IncA/C2 plasmids, and/or the chromosome. Molecular surveillance of pathogens such as S. Concord supports the understanding of AMR and the multi-sector response to the global AMR threat. This study provides a comprehensive baseline data set essential for future molecular surveillance. |
| Evaluation of the impact of guideline communication from the Centers for Disease Control and Prevention and the Centers for Medicare and Medicaid Services among US healthcare providers: COVID-19 prevention counselling guidance
Taylor MM , Deb A , Frazier B , Lueken JR , Das M , Molke J , Fitzgerald E , Ullian T , Nair R , Couch M , Turbyfill C , Horter L , Joshi C , DeLuca N . Nurs Open 2023 10 (11) 7437-7445 AIM: To evaluate healthcare provider awareness and uptake of the Centers for Medicare & Medicaid Services (CMS) billing for coronavirus disease 2019 (COVID-19) prevention counselling and the delivery of prevention counselling to patients awaiting severe acute respiratory syndrome coronavirus 2 test results. DESIGN: Cross sectional survey of US-based healthcare providers in February 2021. METHODS: Analysis of associations with healthcare provider-reported awareness of CMS prevention counselling guidance and billing with provider type, specialty, and work setting. RESULTS: A total of 1919 healthcare providers responded to the survey. Overall, 38% (726/1919) of providers reported awareness of available CMS reimbursement for COVID-19 patient counselling and 29% (465/1614) of CMS billing-eligible providers reported billing for this counselling. Among physicians, those aware of CMS guidance were significantly more likely to bill (58%) versus those unaware (10%). Among RNSights respondents eligible for CMS billing (n = 114), 31% of those aware of the guidance reported billing as compared to 0% of those not aware. |
| COVID-19 vaccine safety first year findings in adolescents
Hesse EM , Hause A , Myers T , Su JR , Marquez P , Zhang B , Cortese MM , Thames-Allen A , Curtis CR , Maloney SA , Thompson D , Nair N , Alimchandani M , Niu M , Gee J , Shay DK , Shimabukuro TT . Pediatrics 2023 151 (5) BACKGROUND AND OBJECTIVES: The Food and Drug Administration expanded Emergency Use Authorization for use of Pfizer-BioNTech (BNT-162b2) coronavirus disease 2019 vaccine to include people ages 12 years and older on May 10, 2021. We describe adverse events observed during the first full year of the US coronavirus disease 2019 vaccination program for adolescents ages 12 to 17 years. METHODS: We conducted descriptive analyses using data from 2 complementary US vaccine safety monitoring systems: v-safe, a voluntary smartphone-based system that monitors reactions and health impacts, and the Vaccine Adverse Event Reporting System (VAERS), the national spontaneous reporting system. We reviewed reports and calculated adverse event reporting rates using vaccine administration data. RESULTS: Among 172 032 adolescents ages 12 to 17 years enrolled in v-safe, most reported reactions following BNT-162b2 were mild to moderate, most frequently reported on the day after vaccination, and more common after dose 2. VAERS received 20 240 adverse event reports; 91.5% were nonserious. Among adverse events of interest, we verified 40 cases of multisystem inflammation syndrome in children (1.2 cases per million vaccinations), 34 (85%) of which had evidence of prior severe acute respiratory syndrome coronavirus 2 infection; and 570 cases of myocarditis (17.7 cases per million vaccinations), most of whom (77%) reported symptom resolution at the time of report. CONCLUSIONS: During the first year BNT-162b2 was administered to adolescents ages 12 to 17 years, most reported adverse events were mild and appeared self-limited. Rates of myocarditis were lower than earlier reports. No new serious safety concerns were identified. |
| In-hospital mortality risk stratification in children under 5 years old with pneumonia with or without pulse oximetry: A secondary analysis of the Pneumonia REsearch Partnership To Assess WHO REcommendations (PREPARE) dataset
Hooli S , King C , McCollum ED , Colbourn T , Lufesi N , Mwansambo C , Gregory CJ , Thamthitiwat S , Cutland C , Madhi SA , Nunes MC , Gessner BD , Hazir T , Mathew JL , Addo-Yobo E , Chisaka N , Hassan M , Hibberd PL , Jeena P , Lozano JM , MacLeod WB , Patel A , Thea DM , Nguyen NTV , Zaman SM , Ruvinsky RO , Lucero M , Kartasasmita CB , Turner C , Asghar R , Banajeh S , Iqbal I , Maulen-Radovan I , Mino-Leon G , Saha SK , Santosham M , Singhi S , Awasthi S , Bavdekar A , Chou M , Nymadawa P , Pape JW , Paranhos-Baccala G , Picot VS , Rakoto-Andrianarivelo M , Rouzier V , Russomando G , Sylla M , Vanhems P , Wang J , Basnet S , Strand TA , Neuman MI , Arroyo LM , Echavarria M , Bhatnagar S , Wadhwa N , Lodha R , Aneja S , Gentile A , Chadha M , Hirve S , O'Grady KF , Clara AW , Rees CA , Campbell H , Nair H , Falconer J , Williams LJ , Horne M , Qazi SA , Nisar YB . Int J Infect Dis 2023 129 240-250 OBJECTIVES: We determined pulse oximetry benefit in pediatric pneumonia mortality-risk stratification and chest indrawing pneumonia in-hospital mortality risk factors. METHODS: We report characteristics and in-hospital pneumonia-related mortality of children 2-59-months-old included in the Pneumonia Research Partnership to Assess WHO Recommendations dataset. We developed multivariable logistic regression models of chest indrawing pneumonia to identify mortality risk factors. RESULTS: Among 285,839 children, 164,244 (57·5%) from hospital-based studies were included. Pneumonia case fatality risk (CFR) without pulse oximetry measurement was higher than with measurement (5·8%, 95% CI 5·6-5·9% vs 2·1%, 95% CI 1·9-2·4%). One in five children with chest indrawing pneumonia was hypoxemic (19·7%, 95% CI 19·0-20·4%) and the hypoxemic CFR was 10·3% (95% CI 9·1%-11·5%). Other mortality risk factors were younger age (either 2-5 months (aOR 9·94, 95% CI 6·67-14·84) or 6-11 months (aOR 2·67, 95% CI 1·71-4·16)), moderate malnutrition (aOR 2·41, 95% CI 1·87-3·09), and female sex (aOR 1·82, 95% CI 1·43-2·32). CONCLUSIONS: Children with a pulse oximetry measurement had a lower CFR. Many children hospitalized with chest indrawing pneumonia were hypoxemic and one in ten died. Young age and moderate malnutrition were risk factors for in-hospital chest indrawing pneumonia-related mortality. Pulse oximetry should be integrated in under-five pneumonia hospital care. |
| Reporting rates for VAERS death reports following COVID-19 vaccination, December 14, 2020-November 17, 2021
Day B , Menschik D , Thompson D , Jankosky C , Su J , Moro P , Zinderman C , Welsh K , Dimova RB , Nair N . Pharmacoepidemiol Drug Saf 2023 32 (7) 763-772 PURPOSE: Despite widely available safety information for the COVID-19 vaccines, vaccine hesitancy remains a challenge. In some cases, vaccine hesitancy may be related to concerns about the number of reports of death to the Vaccine Adverse Event Reporting System (VAERS). We aimed to provide information and context about reports of death to VAERS following COVID-19 vaccination. METHODS: This is a descriptive study evaluating reporting rates for VAERS death reports for COVID-19 vaccine recipients in the United States between December 14, 2020, and November 17, 2021. Reporting rates were calculated as death events per million persons vaccinated and compared to expected all-cause (background) death rates. RESULTS: 9,201 death events were reported for COVID-19 vaccine recipients aged five years and older (or age unknown). Reporting rates for death events increased with increasing age, and males generally had higher reporting rates than females. For death events within seven days and 42 days of vaccination, respectively, observed reporting rates were lower than the expected all-cause death rates. Reporting rates for Ad26.COV2.S vaccine were generally higher than for mRNA COVID-19 vaccines, but still lower than the expected all-cause death rates. Limitations of VAERS data include potential reporting bias, missing or inaccurate information, lack of a control group, and reported diagnoses, including deaths, are not causally verified diagnoses. CONCLUSIONS: Reporting rates for death events were lower than the all-cause death rates expected in the general population. Trends in reporting rates reflected known trends in background death rates. These findings do not suggest an association between vaccination and overall increased mortality. This article is protected by copyright. All rights reserved. |
| Results from the second WHO external quality assessment for the molecular detection of respiratory syncytial virus, 2019-2020.
Williams T , Jackson S , Barr I , Bi S , Bhiman J , Ellis J , von Gottberg A , Lindstrom S , Peret T , Rughooputh S , Viegas M , Hirve S , Zambon M , Zhang W , Dia N , Razanazatovo N , Al-Nabet Admh , Abubakar A , Tivane A , Barakat A , Naguib A , Aziz A , Vicari A , Moen A , Govindakarnavar A , Hall A , Darmaa B , Nathalie B , Herring B , Caetano BC , Whittaker B , Baumeister E , Nakouné E , Guthrie E , Inbanathan F , Nair H , Campbell H , Kadjo HA , Oumzil H , Heraud JM , Mott JA , Namulondo J , Leite J , Nahapetyan K , Al Ariqi L , Gazo MHI , Chadha M , Pisareva M , Venter M , Siqueira MM , Lumandas M , Niang M , Albuaini M , Salman M , Oberste S , Srikantiah P , Tang P , Couto P , Smith P , Coyle PV , Dussart P , Nguyen PN , Okada PA , Wijesinghe PR , Samuel R , Brown R , Pebody R , Fasce R , Jha R , Lindstrom S , Gerber S , Potdar V , Dong X , Deng YM . Influenza Other Respir Viruses 2023 17 (1) e13073
Background: External quality assessments (EQAs) for the molecular detection of human respiratory syncytial virus (RSV) are necessary to ensure the standardisation of reliable results. The Phase II, 2019–2020 World Health Organization (WHO) RSV EQA included 28 laboratories in 26 countries. The EQA panel evaluated performance in the molecular detection and subtyping of RSV-A and RSV-B. This manuscript describes the preparation, distribution, and analysis of the 2019–2020 WHO RSV EQA. Methods: Panel isolates underwent whole genome sequencing and in silico primer matching. The final panel included nine contemporary, one historical virus and two negative controls. The EQA panel was manufactured and distributed by the UK National External Quality Assessment Service (UK NEQAS). National laboratories used WHO reference assays developed by the United States Centers for Disease Control and Prevention, an RSV subtyping assay developed by the Victorian Infectious Diseases Reference Laboratory (Australia), or other in-house or commercial assays already in use at their laboratories. Results: An in silico analysis of isolates showed a good match to assay primer/probes. The panel was distributed to 28 laboratories. Isolates were correctly identified in 98% of samples for detection and 99.6% for subtyping. Conclusions: The WHO RSV EQA 2019–2020 showed that laboratories performed at high standards. Updating the composition of RSV molecular EQAs with contemporary strains to ensure representation of circulating strains, and ensuring primer matching with EQA panel viruses, is advantageous in assessing diagnostic competencies of laboratories. Ongoing EQAs are recommended because of continued evolution of mismatches between current circulating strains and existing primer sets. © 2023 The Authors. Influenza and Other Respiratory Viruses published by John Wiley & Sons Ltd. |
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