Last data update: Mar 17, 2025. (Total: 48910 publications since 2009)
Records 1-30 (of 270 Records) |
Query Trace: Cheng T[original query] |
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Two human cases of fatal meningoencephalitis associated with potosi and lone star virus infections, United States, 2020-2023
Chiu CY , Godasi RR , Hughes HR , Servellita V , Foresythe K , Tubati A , Zorn K , Sidhu S , Wilson MR , Bethina SV , Abenroth D , Cheng Y , Grams R , Reese C , Isada C , Thottempudi N . Emerg Infect Dis 2025 31 (2) 215-221 ![]() ![]() We used clinical metagenomic next-generation sequencing of cerebrospinal fluid to investigate bunyavirus infections in 2 immunocompromised patients in the United States who had fatal meningoencephalitis. Potosi virus has been isolated from mosquito vectors and Lone Star virus from tick vectors. These findings highlight the power of metagenomic next-generation sequencing in broad-based, agnostic detection of emerging viral infections that test negative using conventional targeted diagnostic methods. |
Diabetes distress among US adults with diagnosed diabetes, 2021
Alexander DS , Saelee R , Rodriguez B , Koyama AK , Cheng YJ , Tang S , Rutkowski RE , Bullard KM . Prev Chronic Dis 2025 22 E07 National prevalence of diabetes distress is unknown among US adults. This cross-sectional study examined the prevalence among US adults with diabetes using 2021 National Health Interview Survey data. Multivariable multinomial logistic regressions were used to estimate adjusted prevalence and prevalence ratios for diabetes distress. Adjusted prevalence of moderate and severe diabetes distress was 24.3% (95% CI, 22.5%-26.1%) and 6.6% (95% CI, 5.6%-7.8%), respectively. Prevalence was higher among people aged 18 to 64 years, women, and those with lower incomes. Findings highlight the importance of examining economic and social factors and integrating diabetes distress screening into diabetes management and services. |
Incidence of metabolic and bariatric surgery among US adults with obesity by diabetes status: 2016-2020
Cheng YJ , Bullard KM , Hora I , Belay B , Xu F , Holliday CS , Simons-Linares R , Benoit SR . BMJ Open Diabetes Res Care 2025 13 (1) INTRODUCTION: Metabolic and bariatric surgery (MBS) is an effective intervention to manage diabetes and obesity. The population-based incidence of MBS is unknown. OBJECTIVE: To estimate the incidence of MBS among US adults with obesity by diabetes status and selected sociodemographic characteristics. RESEARCH DESIGN AND METHODS: This cross-sectional study used data from the 2016-2020 Nationwide Inpatient Sample and Nationwide Ambulatory Surgery Sample to capture MBS procedures. The National Health Interview Survey was used to establish the denominator for incidence calculations. Participants included US non-pregnant adults aged ≥18 years with obesity. The main outcome was incident MBS without previous MBS, defined by International Classification of Diseases, Tenth Revision Procedure Codes, Diagnosis Related Group system codes, and Current Procedural Terminology codes. Adjusted incidence and annual percentage change (2016-2019) were estimated using logistic regression. RESULTS: Among US adults with obesity, over 900 000 MBS procedures were performed in inpatient and hospital-owned ambulatory surgical centers in the USA during 2016-2020. The age- and sex-adjusted incidence of MBS per 1000 adults was 5.9 (95% CI 5.4 to 6.4) for adults with diabetes and 2.0 (95% CI 1.9 to 2.1) for adults without diabetes. MBS incidence was significantly higher for women and adults with class III obesity regardless of diabetes status. The highest incidence of MBS occurred in the Northeast region. Sleeve gastrectomy was the most common MBS surgical approach. CONCLUSIONS: Incident MBS procedures were nearly threefold higher among adults with obesity and diabetes than those with obesity but without diabetes. Continued monitoring of the trends of MBS and other treatment modalities can inform our understanding of treatment accessibility to guide prevention efforts aimed at reducing obesity and diabetes. |
Effectiveness of 2023 Southern Hemisphere influenza vaccines against severe influenza-associated illness: pooled estimates from eight countries using the test-negative design
Radhika Radhika , Gharpure Allen C , Regan Annette K , Nogareda Francisco , Cheng Christopher C , George Siobhan St , Huang QSue , Wood Tim , Anglemyer Andrew , Prasert Kriengkrai , Praphasiri Prabda , Davis William W , Pittayawonganon Chakrarat , Ercole Regina , Iturra Analia , de Almeida Walquiria Aparecida Ferreira , de Paula Junior Francisco Jose , Avendano Vigueras Marcela , Olivares Barraza Maria Fernanda , Dominguez Chavely , Penayo Elena , Goni Natalia , Tritten Daiana , Couto Paula , Salas Daniel , Fowlkes Ashley L , Duca Lindsey M , Azziz-Baumgartner Eduardo , Sullivan Sheena G . Lancet Glob Health 2025 13 (2) e203-e211 ![]() ![]() Background: Annual estimates of seasonal influenza vaccine effectiveness can guide global risk communication and vaccination strategies to mitigate influenza-associated illness. We aimed to evaluate vaccine effectiveness in countries using the 2023 southern hemisphere influenza vaccine formulation. |
Indicator-based tuberculosis infection control assessments with knowledge, attitudes, and practices evaluations among health facilities in China, 2017-2019
Zhang C , O'Connor S , Chen H , Rodriguez DF , Hao L , Wang Y , Li Y , Xu J , Chen Y , Xia L , Yang X , Zhao Y , Cheng J . Am J Infect Control 2024 BACKGROUND: Tuberculosis (TB) Building and Strengthening Infection Control Strategies (TB BASICS) aimed to achieve improvements in TB infection prevention and control (IPC) through structured training and mentorship. METHODS: TB BASICS was implemented in six Chinese provinces from 2017-2019. Standardized, facility-based risk assessments tailored to inpatient, laboratory, and outpatient departments were conducted quarterly for 18 months. Knowledge, attitudes, and practices surveys were administered to healthcare workers (HCW) at nine participating facilities during the first and last assessments. Kruskal-Wallis rank sum test assessed score differences between departments (alpha = 0.05). RESULTS: Fifty-seven departments received risk assessments. IPC policies and practices improved substantially during follow up. Facility-based assessment scores were significantly lower in outpatient departments than other departments (p <0.05). All indicators achieved at least partial implementation by the final assessment. Low scores persisted for implementing isolation protocols, while personal protective equipment use among staff was consistent among all departments. Overall, we observed minimal change in IPC knowledge among HCW. In general, HCW had favorable views of their own IPC capabilities, but reported limited agency to improve institutional IPC. CONCLUSIONS: TB BASICS demonstrated improvements in TB IPC implementation. Structured training and mentorship engaged HCW to maintain confidence and competency for TB prevention. |
Diagnostic test characteristics of ultrasound-based hydronephrosis for chronic kidney disease in children and adolescents with myelomeningocele: Results from the UMPIRE and NSBPR cohort studies
Chu DI , Liu T , Williams T , Mix J , Ahn J , Austin JC , Baum M , Clayton D , Jarosz S , Joseph D , Roth E , Routh J , Tu D , Vasquez E , Wallis MC , Wiener J , Cheng E , Yerkes E , Tanaka S . J Urol 2024 101097ju0000000000004342 PURPOSE: Renal ultrasounds are performed in patients with myelomeningocele to screen for markers of kidney health, including hydronephrosis. We evaluated the diagnostic accuracy of hydronephrosis to screen for low kidney function defined by estimated glomerular filtration rate (eGFR). MATERIALS AND METHODS: We performed a retrospective cross-sectional study using data from 2 cohorts of children and youth with myelomeningocele. The first cohort is the Urological Management to Preserve Initial Renal Function Protocol for Young Children With Spina Bifida (UMPIRE; 2016-2022) and the second from the National Spina Bifida Patient Registry (NSBPR; 2009-2021). We identified patients aged 1 to 18 years with available eGFR data within 6 months of an ultrasound. We excluded NSBPR patients younger than 6 years to address potential duplication across cohorts. The primary outcome was eGFR < 90 mL/min/1.73 m(2), calculated using the bedside Schwartz formula. Hydronephrosis was dichotomized into any/none. We calculated sensitivity, specificity, positive predictive value (PPV), and negative predictive value (NPV) of any hydronephrosis using eGFR as the reference standard. RESULTS: In UMPIRE, 221 patients were included with median age 2.4 years (IQR, 1.9-3.8) and 24% having eGFR < 90. Any hydronephrosis vs none conferred a sensitivity/specificity/PPV/NPV of 25%/75%/24%/77%, respectively. In NSBPR, 2269 patients were included with median age 13 years (IQR, 9.6-16.3) and 17% having eGFR < 90. Any hydronephrosis vs none conferred a sensitivity/specificity/PPV/NPV of 24%/87%/26%/85%, respectively. CONCLUSIONS: In 2 cohorts of children and youth with myelomeningocele, hydronephrosis conferred a sensitivity of ∼25% for a creatinine-based eGFR < 90 mL/min/1.73 m(2). This low sensitivity suggests that hydronephrosis alone is a poor screening marker of kidney health. |
Nerve agent exposure and physiological stress alter brain microstructure and immune profiles after inflammatory challenge in a long-term rat model of Gulf War Illness
Cheng CH , Guan Y , Chiplunkar VP , Mortazavi F , Medalla ML , Sullivan K , O'Callaghan JP , Koo BB , Kelly KA , Michalovicz LT . Brain, Behav, Immun - Health 2024 42 Gulf War Illness (GWI) is a disorder experienced by many veterans of the 1991 Gulf War, with symptoms including fatigue, chronic pain, respiratory and memory problems. Exposure to toxic chemicals during the war, such as oil well fire smoke, pesticides, physiological stress, and nerve agents, is thought to have triggered abnormal neuroinflammatory responses that contribute to GWI. Previous studies have examined the acute effects of combined physiological stress and chemical exposures using GWI rodent models and presented findings related to neuroinflammation and changes in diffusion magnetic resonance imaging (MRI) measures, suggesting a neuroimmune basis for GWI. In the current study, using ex vivo MRI, cytokine mRNA expression, and immunohistological analyses of brain tissues, we examined the brain structure and immune function of a chronic rat model of GWI. Our data showed that a combination of long-term corticosterone treatment (to mimic high physiological stress) and diisopropyl fluorophosphate exposure (to mimic sarin exposure) primed the response to subsequent systemic immune challenge with lipopolysaccharide resulting in elevations of multiple cytokine mRNAs, an increased activated glial population, and disrupted brain microstructure in the cingulate cortex and hippocampus compared to control groups. Our findings support the critical role of neuroinflammation, dysregulated glial activation, and their relationship to disrupted brain microstructural integrity in the pathophysiology of GWI and highlight the unique consequences of long-term combined exposures on brain biochemistry and structural connectivity. © 2024 |
A multi-provincial outbreak of Salmonella Newport infections associated with red onions: A report of the largest Salmonella outbreak in Canada in over 20 years
Denich L , Cheng JM , Smith CR , Taylor M , Atkinson R , Boyd E , Chui L , Honish L , Isaac L , Kearney A , Liang JJ , Mah V , Manore AJW , McCormic ZD , Misfeldt C , Nadon C , Patel K , Sharma D , Todd A , Hexemer A . Epidemiol Infect 2024 152 e106 ![]() ![]() An investigation into an outbreak of Salmonella Newport infections in Canada was initiated in July 2020. Cases were identified across several provinces through whole-genome sequencing (WGS). Exposure data were gathered through case interviews. Traceback investigations were conducted using receipts, invoices, import documentation, and menus. A total of 515 cases were identified in seven provinces, related by 0-6 whole-genome multi-locus sequence typing (wgMLST) allele differences. The median age of cases was 40 (range 1-100), 54% were female, 19% were hospitalized, and three deaths were reported. Forty-eight location-specific case sub-clusters were identified in restaurants, grocery stores, and congregate living facilities. Of the 414 cases with exposure information available, 71% (295) had reported eating onions the week prior to becoming ill, and 80% of those cases who reported eating onions, reported red onion specifically. The traceback investigation identified red onions from Grower A in California, USA, as the likely source of the outbreak, and the first of many food recall warnings was issued on 30 July 2020. Salmonella was not detected in any tested food or environmental samples. This paper summarizes the collaborative efforts undertaken to investigate and control the largest Salmonella outbreak in Canada in over 20 years. |
Designing an experimental platform to assess ergonomic factors and distraction index in law enforcement vehicles during mission-based routes
Cheng MH , Guan J , Dave HK , White RS , Whisler RL , Zwiener JV , Camargo HE , Current RS . Machines 2024 12 (8) ![]() Mission-based routes for various occupations play a crucial role in occupational driver safety, with accident causes varying according to specific mission requirements. This study focuses on the development of a system to address driver distraction among law enforcement officers by optimizing the Driver–Vehicle Interface (DVI). Poorly designed DVIs in law enforcement vehicles, often fitted with aftermarket police equipment, can lead to perceptual-motor problems such as obstructed vision, difficulty reaching controls, and operational errors, resulting in driver distraction. To mitigate these issues, we developed a driving simulation platform specifically for law enforcement vehicles. The development process involved the selection and placement of sensors to monitor driver behavior and interaction with equipment. Key criteria for sensor selection included accuracy, reliability, and the ability to integrate seamlessly with existing vehicle systems. Sensor positions were strategically located based on previous ergonomic studies and digital human modeling to ensure comprehensive monitoring without obstructing the driver’s field of view or access to controls. Our system incorporates sensors positioned on the dashboard, steering wheel, and critical control interfaces, providing real-time data on driver interactions with the vehicle equipment. A supervised machine learning-based prediction model was devised to evaluate the driver’s level of distraction. The configured placement and integration of sensors should be further studied to ensure the updated DVI reduces driver distraction and supports safer mission-based driving operations. © 2024 by the authors. |
Health service utilization patterns among Medicaid enrollees with intellectual and developmental disabilities before and during the COVID-19 pandemic: Implications for pandemic response and recovery efforts
Kearly A , Hluchan M , Brazeel C , Lane JT , Oputa J , Baio J , Cree RA , Cheng Q , Wray A , Payne C , Gerling J , Pham T , Ekart S . J Public Health Manag Pract 2024 OBJECTIVES: To assess the impact of COVID-19 on health service utilization of adults with intellectual and developmental disabilities (IDDs) through an analysis of Medicaid claims data. DESIGN: Retrospective cohort study of Medicaid claims. SETTING AND PARTICIPANTS: Medicaid members aged 25 to 64 years from January 1, 2018, to March 31, 2021, from the states of Louisiana, Pennsylvania, and Wyoming. INTERVENTION: We analyzed data from two 12-month time periods (pre-COVID-19 and during COVID-19) and assessed the potential impact of the COVID-19 pandemic on health service utilization and service intensity for 3 cohorts: (1) IDD with preexisting mental health diagnoses, (2) IDD without mental health diagnoses, and (3) all other Medicaid members. MAIN OUTCOME MEASURE: Health service utilization determined by specific claims data classifications. RESULTS: The analysis showed reduced utilization for nonmental health service types with differing utilization patterns for IDD with preexisting mental health diagnoses, IDD without mental health diagnoses, and all other Medicaid members. Change in utilization varied, however, for mental health service types. Measures of service intensity showed decreased numbers of members utilizing services across most service types and increased Medicaid claims per person across most mental health service categories but decreased Medicaid claims per person for most nonmental health services. CONCLUSIONS: Results suggest a need for mental health services among all Medicaid members during the COVID-19 pandemic. By anticipating these needs, communities may be able to expand outreach to Medicaid members through enhanced case management, medication checks, and telemedicine options. |
Effect of childcare influenza vaccine requirement on vaccination rates, New York City, 2012-2020
Metroka AE , Papadouka V , Ternier A , Cheng I , Zucker JR . Public Health Rep 2024 333549241260166 OBJECTIVES: In 2014, New York City initiated a childcare influenza vaccine requirement to increase influenza vaccination rates among children aged 6-59 months attending city-regulated childcare, including prekindergarten. We evaluated the requirement's effect on vaccination rates in childcare-aged children in New York City. METHODS: We examined influenza vaccination rates in children aged 6-59 months and by age groups of 1, 2, 3, and 4 years for 8 influenza seasons (2012-2013 through 2019-2020), representing 2 seasons before the requirement, 2 seasons during the requirement, 2 seasons after its suspension, and 2 seasons after its reinstatement. We also assessed rates in a comparison group of children aged 5-8 years. We performed a difference-in-differences analysis to compare rate differences in age groups when the requirement was and was not in effect. We considered P < .05 as significant based on the Wald χ(2) test. RESULTS: Influenza vaccination rates among children aged 6-59 months increased 3.7 percentage points (from 47.7% to 51.4%) by the requirement's second year and declined 6.7 percentage points to 44.7% after suspension. After reinstatement, rates increased 10.7 percentage points to 55.4%. Rate changes were most pronounced among 4-year-olds, increasing 12.7 percentage points (from 45.3% to 58.0%) by the requirement's second year, declining 14.1 percentage points to 43.9% after suspension, and increasing 22.2 percentage points to 66.1% after reinstatement. In the comparison group, rates increased 4.9 percentage points (from 36.5% to 41.4%) after reinstatement. Rates increased significantly among 4-year-olds before versus at the initial requirement and decreased significantly after suspension. After reinstatement, rates increased significantly among all groups except 1-year-olds. CONCLUSION: The New York City influenza vaccine requirement improved influenza vaccination rates among preschool-aged children, adding to the evidence base showing that vaccine requirements raise vaccination rates. |
Trends in all-cause and cause-specific mortality by BMI levels in England, 2004–2019: a population-based primary care records study
Sophiea MK , Zaccardi F , Cheng YJ , Vamos EP , Holman N , Gregg EW . Lancet Reg Health Eur 2024 44 Background: In the UK, obesity rates are rising concurrently with declining mortality rates. Yet, there is limited research on the shifts of mortality trends and the impact of obesity-related mortality. In this study, we examine mortality trends and the cause-specific proportional composition of deaths by body mass index. Methods: We used primary healthcare records from the Clinical Practice Research Datalink between 2004 and 2019, linked to national death registration data. There were 880,683 individuals with at least one BMI measurement and a 5-year survival period. We used discrete Poisson regression and joinpoint analysis to estimate the all-cause and cause-specific mortality rate and significance of the trends. Findings: Between January 1, 2004, and December 31, 2019, all-cause mortality rates declined in the obese category by 3% on average per year (from 23.3 to 14.6 deaths per 1000 person years) in males and 2% on average per year (from 12.5 to 9.4 deaths per 1000 person years) in females. Cardiovascular disease mortality declined 7% on average per year (from 12.4 to 4.4 deaths per 1000 person years) in males and 4% on average per year (from 5.5 to 3.0 deaths per 1000 person years) in females in the obese category. Increases in mortality rates from neurological conditions occurred in all BMI categories in males and females. By the end of the study, cancers became the primary contributor of death in males in all BMI categories and females in the overweight category. Interpretation: There have been significant declines in all-cause and cardiovascular disease mortality in males and females, leading to a diversification of mortality, with cancers contributing to the highest proportion of deaths and increases in causes such as neurological and respiratory conditions. Further screening, prevention, and treatment implementation for a broader set of diseases is necessary for continued mortality improvements. Funding: Imperial College London, Science Foundation Ireland. © 2024 The Authors |
Assessing the relationship between biomarkers of exposure and biomarkers of potential harm: PATH Study Wave 1 (2013-2014)
Chang CM , Thakur S , Montes de Oca R , Rostron BL , Cheng YC , Wright MJ , van Bemmel DM , Wang L , Hatsukami DK . Cancer Epidemiol Biomarkers Prev 2024 BACKGROUND: The adequacy of biomarkers of potential harm (BOPH) for assessing tobacco products was explored based on their ability to distinguish tobacco use from non-use, change with cessation, and to show biological gradient. METHODS: The sample included individuals with biomarker data in Wave 1 of the Population Assessment of Tobacco Health (PATH) Study who never used tobacco, currently smoke cigarettes exclusively, used to smoke cigarettes exclusively (quit in past 12 months), currently use smokeless tobacco exclusively, and currently use e-cigarettes exclusively. We compared BOPH levels between groups and assessed the relationships between log-transformed biomarkers of exposure (BOE) [Total Nicotine Equivalents including seven nicotine metabolites (TNE-7), 4-(methylnitrosamino)-1-(3-pyridyl)-1-butanonol (NNAL), N-acetyl-S-(2-cyanoethyl)-L-cysteine (CYMA), 1-Hydroxypyrene (1-OHP), cadmium, and serum cotinine (SCOT)], and BOPH [high-sensitivity C-reactive protein (hs-CRP), interleukin-6 (IL-6), fibrinogen, soluble intercellular adhesion molecule-1 (sICAM-1) and 8-isoprostane]. RESULTS: Among people who smoke, both sICAM-1 and 8-isoprostane distinguished smoking from non-use and were associated with all six BOE. Among people who use smokeless tobacco, 8-isoprostane was associated with TNE-7 and NNAL whereas hs-CRP was associated with SCOT. Among people who use e-cigarettes, no associations between BOPH and BOE were observed. CONCLUSIONS: Both sICAM-1 and 8-isoprostane may be useful for assessing the use or changes in use of some tobacco products. Studies examining their predictive validity could further strengthen our understanding of these two biomarkers. IMPACT: We found that two BOPH, sICAM-1 and 8-isoprostane, may have utility in studies assessing the potential harm of tobacco use in absence of long-term epidemiological studies. |
Impact of the COVID-19 pandemic on routine childhood vaccination in 9 U.S. jurisdictions
Treharne A , Patel Murthy B , Zell ER , Jones-Jack N , Loper O , Bakshi A , Nalla A , Kuramoto S , Cheng I , Dykstra A , Robison SG , Youngers EH , Schauer S , Gibbs Scharf L , Harris L . Vaccine 2024 IMPORTANCE: Routine vaccinations are key to prevent outbreaks of vaccine-preventable diseases. However, there have been documented declines in routine childhood vaccinations in the U.S. and worldwide during the COVID-19 pandemic. OBJECTIVE: Assess how the COVID-19 pandemic impacted routine childhood vaccinations by evaluating vaccination coverage for routine childhood vaccinations for children born in 2016-2021. METHODS: Data on routine childhood vaccinations reported to CDC by nine U.S. jurisdictions via the immunization information systems (IISs) by December 31, 2022, were available for analyses. Population size for each age group was obtained from the National Center for Health Statistics' Bridging Population Estimates. MAIN OUTCOMES AND MEASURES: Vaccination coverage for routine childhood vaccinations at age three months, five months, seven months, one year, and two years was calculated by vaccine type and overall, for 4:3:1:3:3:1:4 series (≥4 doses DTaP, ≥3 doses Polio, ≥1 dose MMR, ≥3 doses Hib, ≥3 doses Hepatitis B, ≥1 dose Varicella, and ≥ 4 doses pneumococcal conjugate), for each birth cohort year and by jurisdiction. RESULTS: Overall, there was a 10.4 percentage point decrease in the 4:3:1:3:3:1:4 series in those children born in 2020 compared to those children born in 2016. As of December 31, 2022, 71.0% and 71.3% of children born in 2016 and 2017, respectively, were up to date on their routine childhood vaccinations by two years of age compared to 69.1%, 64.7% and 60.6% for children born in 2018, 2019, and 2020, respectively. CONCLUSIONS AND RELEVANCE: The decline in vaccination coverage for routine childhood vaccines is concerning. In order to protect population health, strategic efforts are needed by health care providers, schools, parents, as well as state, local, and federal governments to work together to address these declines in vaccination coverage during the COVID-19 pandemic to prevent outbreaks of vaccine preventable diseases by maintaining high levels of population immunity. |
Type 1 diabetes genetic risk in 109,954 veterans with adult-onset diabetes: The Million Veteran Program (MVP)
Yang PK , Jackson SL , Charest BR , Cheng YJ , Sun YV , Raghavan S , Litkowski EM , Legvold BT , Rhee MK , Oram RA , Kuklina EV , Vujkovic M , Reaven PD , Cho K , Leong A , Wilson PWF , Zhou J , Miller DR , Sharp SA , Staimez LR , North KE , Highland HM , Phillips LS . Diabetes Care 2024 ![]() OBJECTIVE: To characterize high type 1 diabetes (T1D) genetic risk in a population where type 2 diabetes (T2D) predominates. RESEARCH DESIGN AND METHODS: Characteristics typically associated with T1D were assessed in 109,594 Million Veteran Program participants with adult-onset diabetes, 2011-2021, who had T1D genetic risk scores (GRS) defined as low (0 to <45%), medium (45 to <90%), high (90 to <95%), or highest (≥95%). RESULTS: T1D characteristics increased progressively with higher genetic risk (P < 0.001 for trend). A GRS ≥ 90% was more common with diabetes diagnoses before age 40 years, but 95% of those participants were diagnosed at age ≥40 years, and they resembled T2D in mean age (64.3 years) and BMI (32.3 kg/m2). Compared with the low risk group, the highest-risk group was more likely to have diabetic ketoacidosis (low 0.9% vs. highest GRS 3.7%), hypoglycemia prompting emergency visits (3.7% vs. 5.8%), outpatient plasma glucose <50 mg/dL (7.5% vs. 13.4%), a shorter median time to start insulin (3.5 vs. 1.4 years), use of a T1D diagnostic code (16.3% vs. 28.1%), low C-peptide levels if tested (1.8% vs. 32.4%), and glutamic acid decarboxylase antibodies (6.9% vs. 45.2%), all P < 0.001. CONCLUSIONS: Characteristics associated with T1D were increased with higher genetic risk, and especially with the top 10% of risk. However, the age and BMI of those participants resemble people with T2D, and a substantial proportion did not have diagnostic testing or use of T1D diagnostic codes. T1D genetic screening could be used to aid identification of adult-onset T1D in settings in which T2D predominates. |
Sociodemographic and temporal differences in menthol cigarette use among US adults who smoke, 1999-2018
Cheng YJ , Tsai J , Cornelius ME , Mahoney M , Neff LJ . Prev Chronic Dis 2024 21 E20 INTRODUCTION: Monitoring menthol cigarette use allows for identification of potential health disparities. We examined sociodemographic and temporal differences in menthol cigarette use among US adults who smoke. METHODS: We analyzed data from the 1999-2018 National Health and Nutrition Examination Survey for adults aged 20 years or older who smoke (N = 11,431) using binary logistic regression. RESULTS: Among US adults who smoke, 28.8% used menthol cigarettes. After adjusting for age, sex, race and ethnicity, education, income-to-poverty ratio, and health status, the prevalence of menthol use among adults who smoke increased on average by 3.8% (95% CI, 2.7%-4.9%) annually. Non-Hispanic Black adults had the highest average prevalence of menthol cigarette use, 73.0% (95% CI, 70.9%-75.2%), and Mexican American adults had higher average annual increase in menthol cigarette use, 7.1% (95% CI, 4.0%-10.3%). Adults with fair or poor health status had a 4.3% annual increase in menthol cigarette use (95% CI, 2.5%-6.1%). The adjusted prevalence ratios of menthol cigarette use were 1.61 (95% CI, 1.39-1.83) for adults aged 20-29 years compared with those aged 65 years or older, 1.41 (95% CI, 1.32-1.49) for female adults compared with male adults, and 1.17 (95% CI, 1.07-1.27) for high school graduates or higher compared with those with no high school diploma. CONCLUSION: Non-Hispanic Black adults who smoke had the highest prevalence of menthol cigarette use among all racial and ethnic groups; the prevalence of menthol cigarette use among adults who smoke increased especially among Mexican American adults, younger adults, and adults who reported fair to poor health status. |
Implementing a continuous quality-improvement framework for tuberculosis infection prevention and control in healthcare facilities in China, 2017-2019
Zhang C , O'Connor S , Smith-Jeffcoat SE , Rodriguez DF , Guo H , Hao L , Chen H , Sun Y , Li Y , Xu J , Chen L , Xia L , Yang X , Date A , Cheng J . Infect Control Hosp Epidemiol 2024 1-7 BACKGROUND: Tuberculosis (TB) infection prevention and control (IPC) in healthcare facilities is key to reducing transmission risk. A framework for systematically improving TB IPC through training and mentorship was implemented in 9 healthcare facilities in China from 2017 to 2019. METHODS: Facilities conducted standardized TB IPC assessments at baseline and quarterly thereafter for 18 months. Facility-based performance was assessed using quantifiable indicators for IPC core components and administrative, environmental, and respiratory protection controls, and as a composite of all control types We calculated the percentage changes in scores over time and differences by IPC control type and facility characteristics. RESULTS: Scores for IPC core components increased by 72% during follow-up when averaged across facilities. The percentage changes for administrative, environmental, and respiratory protection controls were 39%, 46%, and 30%, respectively. Composite scores were 45% higher after the intervention. Overall, scores increased most during the first 6 months. There was no association between IPC implementation and provincial economic development or volume of TB services. CONCLUSIONS: TB IPC policies and practices showed most improvement early during implementation and did not differ consistently by facility characteristics. The training component of the project helped increase the capacity of healthcare professionals to manage TB transmission risks. Lessons learned here will inform national TB IPC guidance. |
Identification of contact avoidance zones of robotic devices in human-robot collaborative workspaces
Cheng MH , Liang CJ , McKenzie EA Jr , Dominguez EG . IFAC-PapersOnLine null 56 (3) 577-582 The objective of this study was to establish a framework for producing indoor maps and locating robotic devices in a manufacturing environment. The framework employs computer vision techniques to construct the map and identify the presence of human workers. It defines the contact avoidance zones around human workers and existing obstacles. Once the location of the robot is identified, the map is used to plan paths to ensure safe human-robot collaboration for mobile and collaborative robots in shared workspaces with humans. The incorporation of avoidance zones into the map allows the robotic devices to anticipate the movements of workers and prevent collisions, this decreases the risk of injuries in collaborative environments. This paper illustrates the implementation of robots evading unforeseen contact with pre-defined contact avoidance zones, employing two distinct examples as demonstration. |
Vital signs for pediatric health: Chronic absenteeism
Johnson SB , Edwards A , Cheng T , Kelleher KJ , Kaminski J , Fox EG . NAM Perspect 2023 2023 In 2015, the Institute of Medicine (now the National Academy of Medicine) released the report Vital Signs: Core Metrics for Health and Health Care Progress as a “basic, minimum slate of core metrics for use as sentinel indices of performance at various levels with respect to the key elements of health and health care progress” (IOM, 2015). Although indicators of pediatric health were included in that report as key elements of healthy behaviors, healthy communities, and preventive services, the core measures in the report emphasized indicators of adult health. This series of papers, “Vital Signs for Pediatric Health”, describes four metrics across the pediatric life course, each measuring how well the health care system is building the physical, cognitive, and socio-emotional health of the pediatric population, thereby laying the foundation for life-long health and well-being. The metrics—infant mortality, school readiness, chronic absenteeism, and high school graduation—were selected to focus on four different developmental stages of growth. A standardized set of core metrics to assess pediatric health could provide data to support health systems in identifying important areas for attention among their pediatric population and enable them to respond in a timely way. This rapid response is especially important in pediatric health systems as children undergo rapid development within a short time span. | | This paper discusses one of those four measures—chronic absenteeism in middle school—as a developmental target for middle childhood. Middle school may include grades 5 to 9 or a subset of these grades; typically, this includes children who are approximately 10–15 years old. While chronic absenteeism—typically defined as missing 10% or more of enrolled school days—has potential utility as a measure from the time children enter formal schooling in pre-kindergarten through grade 12, measuring chronic absenteeism in middle childhood provides critical information about health and well-being between two key developmental stages captured by other vital signs: early childhood, captured by school readiness, and adolescence, captured by high school graduation. | | Health and educational success are intertwined, as more education has been linked to better health outcomes across the life course (Basch, 2011; Cutler and Lleras-Muney, 2006). Therefore, participation in education is crucial for both developmental and educational progress. Research has documented associations of chronic absenteeism with both acute (e.g., influenza infection, fractures) and chronic (e.g., asthma, type 1 diabetes mellitus) physical health conditions, as well as with mental health disorders and substance use (Allison et al., 2019). Research has also linked chronic absenteeism to poorer educational performance and attainment (Allison et al., 2019). Chronic absenteeism is robustly inversely associated with on-time high school graduation (BERC, 2011). For more information on the importance of high school graduation, refer to “Vital Signs for Pediatric Health: High School Graduation” (Hoagwood et al., 2023). | | Given the links between educational attainment and health, measuring students' chronic absenteeism in middle school may provide a window into physical and mental health in middle childhood and early adolescence, socio-emotional functioning, readiness to learn, family risk and resilience, and potential threats to current and long-term health and well-being (RWJF, 2016). School-level chronic absenteeism, as well as aggregations of multiple schools, such as those served by a particular health system, may also provide an indicator of the adequacy of interventions to promote health and educational equity at the population level. As such, chronic absenteeism could be a vital sign to measure health systems' performance. | | The remainder of this paper defines the chronic absenteeism measure, the selection of the specific measure that assesses chronic absenteeism, and the technical integrity of the measure. The paper also makes clear the links between school attendance and individual health outcomes. The shifting landscape of chronic absenteeism in the COVID-19 global pandemic and its anticipated aftermath are also considered. |
Serum concentrations of per- and polyfluoroalkyl substances and risk of renal cell carcinoma in the Multiethnic Cohort Study
Rhee J , Chang VC , Cheng I , Calafat AM , Botelho JC , Shearer JJ , Sampson JN , Setiawan VW , Wilkens LR , Silverman DT , Purdue MP , Hofmann JN . Environ Int 2023 180 108197 Per- and polyfluoroalkyl substances (PFAS) are environmentally persistent organic pollutants detectable in the serum of most U.S. adults. We previously reported a positive association between serum perfluorooctanoate (PFOA) concentrations and risk of renal cell carcinoma (RCC) within the Prostate, Lung, Colorectal and Ovarian (PLCO) Cancer Screening Trial, comprising predominantly White individuals enrolled in 1993-2001. To extend our investigations to a larger and more racially and ethnically diverse population, we conducted a nested case-control study of serum PFAS concentrations and RCC within the Multiethnic Cohort Study. We measured pre-diagnostic serum concentrations of nine PFAS among 428 RCC cases and 428 individually matched controls. We estimated odds ratios (ORs) and 95 % confidence intervals (CIs) for risk of RCC in relation to each PFAS using conditional logistic regression, adjusting for RCC risk factors and other PFAS. PFOA was not associated with RCC risk overall [doubling in serum concentration, OR(continuous) = 0.89 (95 %CI = 0.67, 1.18)]. However, we observed suggestive positive associations among White participants [2.12 (0.87, 5.18)] and among participants who had blood drawn before 2002 [1.49 (0.77, 2.87)]. Furthermore, higher perfluorononanoate (PFNA) concentration was associated with increased risk of RCC overall [fourth vs. first quartile, OR = 1.84 (0.97, 3.50), P(trend) = 0.04; OR(continuous) = 1.29 (0.97, 1.71)], with the strongest association observed among African American participants [OR(continuous) = 3.69 (1.33, 10.25)], followed by Native Hawaiian [2.24 (0.70, 7.19)] and White [1.98 (0.92, 4.25)] participants. Most other PFAS were not associated with RCC. While PFOA was not associated with RCC risk overall in this racially and ethnically diverse population, the positive associations observed among White participants and those with sera collected before 2002 are consistent with previous PLCO findings. Our study also provided new evidence of a positive association between PFNA and RCC risk that was strongest in African American participants. These findings highlight the need for additional epidemiologic research investigating PFAS exposures and RCC in large racially and ethnically diverse populations. |
Application of a life table approach to assess duration of BNT162b2 vaccine-derived immunity by age using COVID-19 case surveillance data during the Omicron variant period
Sternberg MR , Johnson A , King J , Ali AR , Linde L , Awofeso AO , Baker JS , Bayoumi NS , Broadway S , Busen K , Chang C , Cheng I , Cima M , Collingwood A , Dorabawila V , Drenzek C , Fleischauer A , Gent A , Hartley A , Hicks L , Hoskins M , Jara A , Jones A , Khan SI , Kamal-Ahmed I , Kangas S , Kanishka F , Kleppinger A , Kocharian A , León TM , Link-Gelles R , Lyons BC , Masarik J , May A , McCormick D , Meyer S , Milroy L , Morris KJ , Nelson L , Omoike E , Patel K , Pietrowski M , Pike MA , Pilishvili T , Peterson Pompa X , Powell C , Praetorius K , Rosenberg E , Schiller A , Smith-Coronado ML , Stanislawski E , Strand K , Tilakaratne BP , Vest H , Wiedeman C , Zaldivar A , Silk B , Scobie HM . PLoS One 2023 18 (9) e0291678 ![]() BACKGROUND: SARS-CoV-2 Omicron variants have the potential to impact vaccine effectiveness and duration of vaccine-derived immunity. We analyzed U.S. multi-jurisdictional COVID-19 vaccine breakthrough surveillance data to examine potential waning of protection against SARS-CoV-2 infection for the Pfizer-BioNTech (BNT162b) primary vaccination series by age. METHODS: Weekly numbers of SARS-CoV-2 infections during January 16, 2022-May 28, 2022 were analyzed by age group from 22 U.S. jurisdictions that routinely linked COVID-19 case surveillance and immunization data. A life table approach incorporating line-listed and aggregated COVID-19 case datasets with vaccine administration and U.S. Census data was used to estimate hazard rates of SARS-CoV-2 infections, hazard rate ratios (HRR) and percent reductions in hazard rate comparing unvaccinated people to people vaccinated with a Pfizer-BioNTech primary series only, by age group and time since vaccination. RESULTS: The percent reduction in hazard rates for persons 2 weeks after vaccination with a Pfizer-BioNTech primary series compared with unvaccinated persons was lowest among children aged 5-11 years at 35.5% (95% CI: 33.3%, 37.6%) compared to the older age groups, which ranged from 68.7%-89.6%. By 19 weeks after vaccination, all age groups showed decreases in the percent reduction in the hazard rates compared with unvaccinated people; with the largest declines observed among those aged 5-11 and 12-17 years and more modest declines observed among those 18 years and older. CONCLUSIONS: The decline in vaccine protection against SARS-CoV-2 infection observed in this study is consistent with other studies and demonstrates that national case surveillance data were useful for assessing early signals in age-specific waning of vaccine protection during the initial period of SARS-CoV-2 Omicron variant predominance. The potential for waning immunity during the Omicron period emphasizes the importance of continued monitoring and consideration of optimal timing and provision of booster doses in the future. |
Failure to thrive in toddlers with lack of interest in eating and food and their cognitive development during later childhood
Chatoor I , Begtrup R , Cheng IY , Vismara L , Webb LE , Lucarelli L . Front Pediatr 2023 11 1179797 BACKGROUND: Experiencing Failure to Thrive or malnutrition in early years has been associated with children later displaying low Intelligence Quotient (IQ). The current study's aim was to examine whether Failure to Thrive in Toddlers with Lack of Interest in Eating and Food, a subtype of Avoidant/Restrictive Food Intake Disorder as defined by DSM-5, which has also previously been identified as Infantile Anorexia (IA), was associated with poor cognitive development outcomes during later childhood. METHODS: The IQs and growth parameter of 30 children (53% female) previously diagnosed and treated for IA at 12 to 42 months of age, were reevaluated at a mean age of 10.0 years (SD = 2.1 years) and compared to 30 matched control children. Children's growth was assessed using Z-scores and their cognitive development was measured using the Wechsler Intelligence Scale for Children-4th Edition. RESULTS: None of the growth parameters were significantly related to IQ. Further, IQ scores of children previously diagnosed with IA and control children were not significantly different. However, the education level of children's fathers had a significantly positive effect on IQ. CONCLUSIONS: Our study highlights the disjunction between growth parameters and IQ within our sample. Overall, our findings suggest that the primary target of intervention for these children should be the parent-child conflict around the feeding relationship, rather than a focus on the child's weight itself. Finally, our results confirm the relevance to include fathers in the intervention of these children. |
Effectiveness of Influenza Vaccines in the HIVE household cohort over 8 years: is there evidence of indirect protection? (preprint)
Malosh RE , Petrie JG , Callear A , Truscon R , Johnson E , Evans R , Bazzi L , Cheng C , Thompson MS , Martin ET , Monto AS . medRxiv 2021 2021.02.16.21251827 Background The evidence that influenza vaccination programs regularly provide protection to unvaccinated individuals (i.e. indirect effects) of a community is lacking. We sought to determine the direct, indirect, and total effects of influenza vaccine in the Household Influenza Vaccine Evaluation (HIVE) cohort.Methods Using longitudinal data from the HIVE cohort from 2010-11 through 2017-18, we estimated direct, indirect, and total influenza vaccine effectiveness (VE) and the incidence rate ratio of influenza virus infection using adjusted mixed-effect Poisson regression models. Total effectiveness was determined through comparison of vaccinated members of full or partially vaccinated households to unvaccinated individuals in completely unvaccinated households.Results The pooled, direct VE against any influenza was 30.2% (14.0-43.4). Direct VE was higher for influenza A/H1N1 43.9% (3.9 to 63.5) and B 46.7% (17.2 to 57.5) than A/H3N2 31.7% (10.5 to 47.8); and was higher for young children 42.4% (10.1 to 63.0) than adults 18.6% (−6.3 to 37.7). Influenza incidence was highest in completely unvaccinated households (10.6 per 100 person-seasons) and lower at all other levels of household vaccine coverage. We found little evidence of indirect VE after adjusting for potential confounders. Total VET was 56.4% (30.1-72.9) in low coverage, 43.2% (19.5-59.9) in moderate coverage, and 33.0% (12.1 to 49.0) in fully vaccinated households.Conclusion Influenza vaccines may have a benefit above and beyond the direct effect but that effect in this study was small. While there may be exceptions, the goal of global vaccine recommendations should remain focused on provision of documented, direct protection to those vaccinated.Competing Interest StatementThe authors have declared no competing interest.Funding StatementThis work was funded by the National Institute of Allergy and Infectious Disease (R03AI137658). The HIVE Study was further supported by the Centers for Disease Control and Prevention (U01 IP000170, U01 IP000474) and the National Institute of Allergy and Infectious Diseases (R01 AI097150, R56 AI097150).Author DeclarationsI confirm all relevant ethical guidelines have been followed, and any necessary IRB and/or ethics committee approvals have been obtained.YesThe details of the IRB/oversight body that provided approval or exemption for the research described are given below:The HIVE study is approved by the institutional review board at the University of Michigan Medical School.All necessary patient/participant consent has been obtained and the appropriate institutional forms have been archived.YesI understand that all clinical trials and any other prospective interventional studies must be registered with an ICMJE-approved registry, such as ClinicalTrials.gov. I confirm that any such study reported in the manuscript has been registered and the trial registration ID is provided (note: if posting a prospective study registered retrospectively, please provide a statement in the trial ID field explaining why the study was not registered in advance).YesI have followed all appropriate research reporting guidelines and uploaded the relevant EQUATOR Network research reporting checklist(s) and other pertinent material as supplementary files, if applicable.YesThe data included in this analysis are available from the corresponding author on reasonable request. |
Evaluation of correlates of protection against influenza A(H3N2) and A(H1N1)pdm09 infection: Applications to the hospitalized patient population (preprint)
Petrie JG , Martin ET , Truscon R , Johnson E , Cheng CK , McSpadden EJ , Malosh RE , Lauring AS , Lamerato LE , Eichelberger MC , Ferdinands JM , Monto AS . bioRxiv 2018 416628 Background Influenza vaccines are important for prevention of influenza-associated hospitalization. Assessments of serologic correlates of protection can support interpretation of influenza vaccine effectiveness evaluations in hospitalized populations.Methods Serum specimens collected at admission from adults hospitalized for treatment of acute respiratory illnesses during two influenza seasons were tested in hemagglutination-inhibition (HAI) and neuraminidase-inhibition (NAI) assays. We evaluated the suitability of these specimens as proxies for pre-infection immune status, and measured associations between antibody titers and influenza vaccination and infectionResults Specimens were collected within 3 days of illness onset from 65% of participants; geometric mean titers (GMTs) did not vary by day of collection. In both seasons, vaccinated participants had higher HAI and NAI GMTs than unvaccinated participants. HAI titers against the 2014-2015 A(H3N2) vaccine strain did not correlate with protection from infection with antigenically-drifted A(H3N2) viruses that circulated that season. In contrast, higher HAI titers against the A(H1N1)pdm09 vaccine strain were associated with reduced odds of A(H1N1)pdm09 infection in 2015-2016.Conclusions Serum collected after hospital admission can be used to assess correlates of protection against influenza infection. Broader implementation of similar studies would provide an opportunity to understand the successes and shortcomings of current influenza vaccines.We thank Jin Gao and Laura Couzens for technical support and are indebted to St Jude Children’s Research Hospital for plasmids that were used to generate reassortant influenza viruses. |
A distinct cross-reactive autoimmune response in multisystem inflammatory syndrome in children (MIS-C) (preprint)
Bodansky A , Sabatino JJ , Vazquez SE , Chou J , Novak T , Moffitt KL , Miller HS , Kung AF , Rackaityte E , Zamecnik CR , Rajan JV , Kortbawi H , Mandel-Brehm C , Mitchell A , Wang CY , Saxena A , Zorn K , Yu DJL , Asaki J , Pluvinage JV , Wilson MR , Loftis LL , Hobbs CV , Tarquinio KM , Kong M , Fitzgerald JC , Espinal PS , Walker TC , Schwartz SP , Crandall H , Irby K , Staat MA , Rowan CM , Schuster JE , Halasa NB , Gertz SJ , Mack EH , Maddux AB , Cvijanovich NZ , Zinter MS , Zambrano LD , Campbell AP , Randolph AG , Anderson MS , DeRisi JL , Kelley H , Murdock M , Colston C , Typpo KV , Sanders RC , Yates M , Smith C , Port E , Mansour R , Shankman S , Baig N , Zorensky F , Chatani B , McLaughlin G , Jones K , Coates BM , Newhams MM , Kucukak S , McNamara ER , Moon HK , Kobayashi T , Melo J , Jackson SR , Rosales MKE , Young C , Chen SR , Da Costa Aguiar R , Gutierrez-Arcelus M , Elkins M , Williams D , Williams L , Cheng L , Zhang Y , Crethers D , Morley D , Steltz S , Zakar K , Armant MA , Ciuculescu F , Flori HR , Dahmer MK , Levy ER , Behl S , Drapeau NM , Kietzman A , Hill S , Cullimore ML , McCulloh RJ , Nofziger RA , Rohlfs CC , Burnett R , Bush J , Reed N , Ampofo KK , Patel MM . medRxiv 2023 30 Multisystem inflammatory syndrome in children (MIS-C) is a severe, post-infectious sequela of SARS-CoV-2 infection, yet the pathophysiological mechanism connecting the infection to the broad inflammatory syndrome remains unknown. Here we leveraged a large set of MIS-C patient samples (n=199) to identify a distinct set of host proteins that are differentially targeted by patient autoantibodies relative to matched controls. We identified an autoreactive epitope within SNX8, a protein expressed primarily in immune cells which regulates an antiviral pathway associated with MIS-C pathogenesis. In parallel, we also probed the SARS-CoV-2 proteome-wide MIS-C patient antibody response and found it to be differentially reactive to a distinct domain of the SARS-CoV-2 nucleocapsid (N) protein relative to controls. This viral N region and the mapped SNX8 epitope bear remarkable biochemical similarity. Furthermore, we find that many children with anti-SNX8 autoantibodies also have T-cells cross-reactive to both SNX8 and this distinct domain of the SARS-CoV-2 N protein. Together, these findings suggest that MIS-C patients develop a distinct immune response against the SARS-CoV-2 N protein that is associated with cross reactivity to the self-protein SNX8, demonstrating a link from the infection to the inflammatory syndrome. Copyright The copyright holder for this preprint is the author/funder, who has granted medRxiv a license to display the preprint in perpetuity. It is made available under a CC-BY-NC 4.0 International license. |
Transmission of SARS-CoV-2 in standardised first few X cases and household transmission investigations: A systematic review and meta-analysis
Lewis HC , Marcato AJ , Meagher N , Valenciano M , Villanueva-Cabezas JP , Spirkoska V , Fielding JE , Karahalios A , Subissi L , Nardone A , Cheng B , Rajatonirina S , Okeibunor J , Aly EA , Barakat A , Jorgensen P , Azim T , Wijesinghe PR , Le LV , Rodriguez A , Vicari A , Van Kerkhove M , McVernon J , Pebody R , Price DJ , Bergeri I , Alemu MA , Alvi Y , Bukusi EA , Chung PS , Dambadarjaa D , Das AK , Dub T , Dulacha D , Ebrahim F , Gonzalez-Duarte MA , Guruge D , Heredia-Melo DC , Herman-Roloff A , Herring BL , Islam F , Jeewandara KC , Kant S , Lako R , Leite J , Malavige GN , Mandakh U , Mariam W , Mend T , Mize VA , Musa S , Nohynek H , Olu OO , Osorio-Merchan MB , Pereyaslov D , Ransom J , Ariqi LA , Khan W , Saxena S , Sharma P , Sreedevi A , Satheesh M , Subhashini KJ , Tippet-Barr BA , Usha A , Wamala JF , Watare SH , Yadav K , Inbanathan FY . Influenza Other Respir Viruses 2022 16 (5) 803-819 Abstract We aimed to estimate the household secondary infection attack rate (hSAR) of SARS-CoV-2 in investigations aligned with the WHO Unity Studies Household Transmission Investigations (HHTI) protocol. We conducted a systematic review and meta-analysis according to PRISMA 2020 guidelines. We searched Medline, Embase, Web of Science, Scopus and medRxiv/bioRxiv for “Unity-aligned” First Few X cases (FFX) and HHTIs published 1 December 2019 to 26 July 2021. Standardised early results were shared by WHO Unity Studies collaborators (to 1 October 2021). We used a bespoke tool to assess investigation methodological quality. Values for hSAR and 95% confidence intervals (CIs) were extracted or calculated from crude data. Heterogeneity was assessed by visually inspecting overlap of CIs on forest plots and quantified in meta-analyses. Of 9988 records retrieved, 80 articles (64 from databases; 16 provided by Unity Studies collaborators) were retained in the systematic review; 62 were included in the primary meta-analysis. hSAR point estimates ranged from 2% to 90% (95% prediction interval: 3%–71%; I2 = 99.7%); I2 values remained >99% in subgroup analyses, indicating high, unexplained heterogeneity and leading to a decision not to report pooled hSAR estimates. FFX and HHTI remain critical epidemiological tools for early and ongoing characterisation of novel infectious pathogens. The large, unexplained variance in hSAR estimates emphasises the need to further support standardisation in planning, conduct and analysis, and for clear and comprehensive reporting of FFX and HHTIs in time and place, to guide evidence-based pandemic preparedness and response efforts for SARS-CoV-2, influenza and future novel respiratory viruses. |
Transmission of SARS-CoV-2 in standardised First Few X cases and household transmission investigations: a systematic review and meta-analysis (preprint)
Lewis HC , Marcato AJ , Meagher N , Valenciano M , Villanueva-Cabezas JP , Spirkoska V , Fielding JE , Karahalios A , Subissi L , Nardone A , Cheng B , Rajatonirina S , Okeibunor J , Aly EA , Barakat A , Jorgensen P , Azim T , Wijesinghe PR , Le LV , Rodriguez A , Vicari A , Van Kerkhove M , McVernon J , Pebody R , Price DJ , Bergeri I , Alemu MA , Alvi Y , Bukusi EA , Chung PS , Dambadarjaa D , Das AK , Dub T , Dulacha D , Ebrahim F , Gonzalez-Duarte MA , Guruge D , Heredia-Melo DC , Herman-Roloff A , Herring BL , Islam F , Jeewandara KC , Kant S , Lako R , Leite J , Malavige GN , Mandakh U , Mariam W , Mend T , Mize VA , Musa S , Nohynek H , Olu OO , Osorio-Merchan MB , Pereyaslov D , Ransom J , Ariqi LA , Khan W , Saxena S , Sharma P , Sreedevi A , Satheesh M , Subhashini KJ , Tippet-Barr BA , Usha A , Wamala JF , Watare SH , Yadav K , Inbanathan FY . medRxiv 2022 03 (5) 803-819 We aimed to estimate the household secondary infection attack rate (hSAR) of SARS-CoV-2 in investigations aligned with the WHO Unity Studies Household Transmission Investigations (HHTI) protocol. We conducted a systematic review and meta-analysis according to PRISMA 2020 guidelines. We searched Medline, Embase, Web of Science, Scopus and medRxiv/bioRxiv for 'Unity-aligned' First Few X cases (FFX) and HHTIs published between 1 December 2019 and 26 July 2021. Standardised early results were shared by WHO Unity Studies collaborators (to 1 October 2021). We used a bespoke tool to assess investigation methodological quality. Values for hSAR and 95% confidence intervals (CIs) were extracted or calculated from crude data. Heterogeneity was assessed by visually inspecting overlap of CIs on forest plots and quantified in meta-analyses. Of 9988 records retrieved, 80 articles (64 from databases; 16 provided by Unity Studies collaborators) were retained in the systematic review and 62 were included in the primary meta-analysis. hSAR point estimates ranged from 2%-90% (95% prediction interval: 3%-71%; I2=99.7%); I2 values remained >99% in subgroup analyses, indicating high, unexplained heterogeneity and leading to a decision not to report pooled hSAR estimates. FFX and HHTI remain critical epidemiological tools for early and ongoing characterisation of novel infectious pathogens. The large, unexplained variance in hSAR estimates emphasises the need to further support standardisation in planning, conduct and analysis, and for clear and comprehensive reporting of FFX and HHTIs in time and place, to guide evidence-based pandemic preparedness and response efforts for SARS-CoV-2, influenza and future novel respiratory viruses. Copyright The copyright holder for this preprint is the author/funder, who has granted medRxiv a license to display the preprint in perpetuity. It is made available under a CC-BY 4.0 International license. |
Effectiveness of 2 and 3 mRNA COVID-19 Vaccines Doses against Omicron and Delta-Related Outpatient Illness among Adults, October 2021 - February 2022 (preprint)
Kim SS , Chung JR , Talbot HK , Grijalva CG , Wernli KJ , Martin ET , Monto AS , Belongia EA , McLean HQ , Gaglani M , Mamawala M , Nowalk MP , Geffel KM , Tartof SY , Florea A , Lee JS , Tenforde MW , Patel MM , Flannery B , Bentz ML , Burgin A , Burroughs M , Davis ML , Howard D , Lacek K , Madden JC , Nobles S , Padilla J , Sheth M , Arroliga A , Beeram M , Dunnigan K , Ettlinger J , Graves A , Hoffman E , Jatla M , McKillop A , Murthy K , Mutnal M , Priest E , Raiyani C , Rao A , Requenez L , Settele N , Smith M , Stone K , Thomas J , Volz M , Walker K , Zayed M , Annan E , Daley P , Kniss K , Merced-Morales A , Ayala E , Amundsen B , Aragones M , Calderon R , Hong V , Jimenez G , Kim J , Ku J , Lewin B , McDaniel A , Reyes A , Shaw S , Takhar H , Torres A , Burganowski R , Kiniry E , Moser KA , Nguyen M , Park S , Wellwood S , Wickersham B , Alvarado-Batres J , Benz S , Berger H , Bissonnette A , Blake J , Boese K , Botten E , Boyer J , Braun M , Breu B , Burbey G , Cravillion C , Delgadillo C , Donnerbauer A , Dziedzic T , Eddy J , Edgren H , Ermeling A , Ewert K , Fehrenbach C , Fernandez R , Frome W , Guzinski S , Heeren L , Herda D , Hertel M , Heuer G , Higdon E , Ivacic L , Jepsen L , Kaiser S , Karl J , Keffer B , King J , Koepel TK , Kohl S , Kohn S , Kohnhorst D , Kronholm E , Le T , Lemieux A , Marcis C , Maronde M , McCready I , McGreevey K , Meece J , Mehta N , Miesbauer D , Moon V , Moran J , Nikolai C , Olson B , Olstadt J , Ott L , Pan N , Pike C , Polacek D , Presson M , Price N , Rayburn C , Reardon C , Rotar M , Rottscheit C , Salzwedel J , Saucedo J , Scheffen K , Schug C , Seyfert K , Shrestha R , Slenczka A , Stefanski E , Strupp M , Tichenor M , Watkins L , Zachow A , Zimmerman B , Bauer S , Beney K , Cheng CK , Faraj N , Getz A , Grissom M , Groesbeck M , Harrison S , Henson K , Jermanus K , Johnson E , Kaniclides A , Kimberly A , Lamerato LE , Lauring A , Lehmann-Wandell R , McSpadden EJ , Nabors L , Truscon R , Balasubramani GK , Bear T , Bobeck J , Bowser E , Clarke K , Clarke LG , Dauer K , Deluca C , Dierks B , Haynes L , Hickey R , Johnson M , Jonsson A , Luosang N , McKown L , Peterson A , Phaturos D , Rectenwald A , Sax TM , Stiegler M , Susick M , Suyama J , Taylor L , Walters S , Weissman A , Williams JV , Blair M , Carter J , Chappell J , Copen E , Denney M , Graes K , Halasa N , Lindsell C , Liu Z , Longmire S , McHenry R , Short L , Tan HN , Vargas D , Wrenn J , Wyatt D , Zhu Y . medRxiv 2022 10 Background: We estimated SARS-CoV-2 Delta and Omicron-specific effectiveness of 2 and 3 mRNA COVID-19 vaccine doses in adults against symptomatic illness in US outpatient settings. Method(s): Between October 1, 2021, and February 12, 2022, research staff consented and enrolled eligible participants who had fever, cough, or loss of taste or smell and sought outpatient medical care or clinical SARS-CoV-2 testing within 10 days of illness onset. Using the test-negative design, we compared the odds of receiving 2 or 3 mRNA COVID-19 vaccine doses among SARS-CoV-2 cases versus controls using logistic regression. Regression models were adjusted for study site, age, onset week, and prior SARS-CoV-2 infection. Vaccine effectiveness (VE) was calculated as (1 - adjusted odds ratio) x 100%. Result(s): Among 3847 participants included for analysis, 574 (32%) of 1775 tested positive for SARS-CoV-2 during the Delta predominant period and 1006 (56%) of 1794 participants tested positive during the Omicron predominant period. When Delta predominated, VE against symptomatic illness in outpatient settings was 63% (95% CI: 51% to 72%) among mRNA 2-dose recipients and 96% (95% CI: 93% to 98%) for 3-dose recipients. When Omicron predominated, VE was 21% (95% CI: -6% to 41%) among 2-dose recipients and 62% (95% CI: 48% to 72%) among 3-dose recipients. Conclusion(s): In this adult population, 3 mRNA COVID-19 vaccine doses provided substantial protection against symptomatic illness in outpatient settings when the Omicron variant became the predominant cause of COVID-19 in the U.S. These findings support the recommendation for a 3rd mRNA COVID-19 vaccine dose. 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. |
A new type 2 diabetes microsimulation model to estimate long-term health outcomes, costs, and cost-effectiveness
Hoerger TJ , Hilscher R , Neuwahl S , Kaufmann MB , Shao H , Laxy M , Cheng YJ , Benoit S , Chen H , Anderson A , Craven T , Yang W , Cintina I , Staimez L , Zhang P . Value Health 2023 26 (9) 1372-1380 OBJECTIVE: To develop a microsimulation model to estimate the health effects, costs, and cost-effectiveness of public health and clinical interventions for preventing/managing type 2 diabetes. METHODS: We combined newly developed equations for complications, mortality, risk factor progression, patient utility, and cost-all based on U.S. studies-in a microsimulation model. We performed internal and external validation of the model. To demonstrate the model's utility, we predicted remaining life-years, quality-adjusted life-years (QALYs), and lifetime medical cost for a representative cohort of 10,000 U.S. adults with type 2 diabetes. We then estimated the cost-effectiveness of reducing HbA1c from 9% to 7% among adults with type 2 diabetes, using low-cost, generic, oral medications. RESULTS: The model performed well in internal validation; the average absolute difference between simulated and observed incidence for 17 complications was less than 8%. In external validation, the model was better at predicting outcomes in clinical trials than in observational studies. The cohort of U.S. adults with type 2 diabetes was projected to have an average of 19.95 remaining life-years (from mean age 61), incur $187,729 in discounted medical costs, and accrue 8.79 discounted QALYs. The intervention to reduce HbA1c increased medical costs by $1,256 and QALYs by 0.39, yielding an incremental cost-effectiveness ratio of $9,103 per QALY. CONCLUSIONS: Using equations exclusively derived from U.S. studies, this new microsimulation model achieves good prediction accuracy in U.S. POPULATIONS: The model can be used to estimate the long-term health impact, costs, and cost-effectiveness of interventions for type 2 diabetes in the United States. |
Trends in robotics research in occupational safety and health: A scientometric analysis and review
Liang CJ , Cheng MH . Int J Environ Res Public Health 2023 20 (10) ![]() Robots have been deployed in workplaces to assist, work alongside, or collaborate with human workers on various tasks, which introduces new occupational safety and health hazards and requires research efforts to address these issues. This study investigated the research trends for robotic applications in occupational safety and health. The scientometric method was applied to quantitatively analyze the relationships between robotics applications in the literature. The keywords "robot", "occupational safety and health", and their variants were used to find relevant articles. A total of 137 relevant articles published during 2012-2022 were collected from the Scopus database for this analysis. Keyword co-occurrence, cluster, bibliographic coupling, and co-citation analyses were conducted using VOSviewer to determine the major research topics, keywords, co-authorship, and key publications. Robot safety, exoskeletons and work-related musculoskeletal disorders, human-robot collaboration, and monitoring were four popular research topics in the field. Finally, research gaps and future research directions were identified based on the analysis results, including additional efforts regarding warehousing, agriculture, mining, and construction robots research; personal protective equipment; and multi-robot collaboration. The major contributions of the study include identifying the current trends in the application of robotics in the occupational safety and health discipline and providing pathways for future research in this discipline. |
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