Last data update: Oct 07, 2024. (Total: 47845 publications since 2009)
Records 1-30 (of 56 Records) |
Query Trace: Vu D[original query] |
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Estimates of incidence and predictors of fatiguing illness after SARS-CoV-2 infection
Vu QM , Fitzpatrick AL , Cope JR , Bertolli J , Sotoodehnia N , West TE , Gentile N , Unger ER . Emerg Infect Dis 2024 30 (3) 539-547 This study aimed to estimate the incidence rates of post-COVID-19 fatigue and chronic fatigue and to quantify the additional incident fatigue caused by COVID-19. We analyzed electronic health records data of 4,589 patients with confirmed COVID-19 during February 2020-February 2021 who were followed for a median of 11.4 (interquartile range 7.8-15.5) months and compared them to data from 9,022 propensity score-matched non-COVID-19 controls. Among COVID-19 patients (15% hospitalized for acute COVID-19), the incidence rate of fatigue was 10.2/100 person-years and the rate of chronic fatigue was 1.8/100 person-years. Compared with non-COVID-19 controls, the hazard ratios were 1.68 (95% CI 1.48-1.92) for fatigue and 4.32 (95% CI 2.90-6.43) for chronic fatigue. The observed association between COVID-19 and the significant increase in the incidence of fatigue and chronic fatigue reinforces the need for public health actions to prevent SARS-CoV-2 infections. |
Mapping SARS-CoV-2 Antibody Epitopes in COVID-19 Patients with a Multi-Coronavirus Protein Microarray (preprint)
Camerini D , Randall AZ , Trappl-Kimmons K , Oberai A , Hung C , Edgar J , Shandling A , Huynh V , Teng AA , Hermanson G , Pablo JV , Stumpf MM , Lester SN , Harcourt J , Tamin A , Rasheed M , Thornburg NJ , Satheshkumar PS , Liang X , Kennedy RB , Yee A , Townsend M , Campo JJ . medRxiv 2021 2021.01.14.21249690 The emergence and rapid worldwide spread of SARS-CoV-2 has accelerated research and development for controlling the pandemic. A multi-coronavirus protein microarray was created containing full-length proteins, overlapping protein fragments of varying lengths and peptide libraries from SARS-CoV-2 and four other human coronaviruses. Sera from confirmed COVID-19 patients as well as unexposed individuals were applied to multi-coronavirus arrays to identify specific antibody reactivity. High level IgG, IgM and IgA reactivity to structural proteins S, M and N, as well as accessory proteins, of SARS-CoV-2 were observed that was specific to COVID-19 patients. Overlapping 100, 50 and 30 amino acid fragments of SARS-CoV-2 proteins identified antigenic regions. Numerous proteins of SARS-CoV, MERS-CoV and the endemic human coronaviruses, HCoV-NL63 and HCoV-OC43 were also more reactive with IgG, IgM and IgA in COVID-19 patient sera than in unexposed control sera, providing further evidence of immunologic cross-reactivity between these viruses. The multi-coronavirus protein microarray is a useful tool for mapping antibody reactivity in COVID-19 patients.Competing Interest StatementDavid Camerini, Arlo Z. Randall, Amit Oberai, Christopher Hung, Joshua Edgar, Adam Shandling, Vu Huynh, Andy A. Teng, Gary Hermanson, Jozelyn V. Pablo, Xiaowu Liang, Angela Yee and Joseph J. Campo are employees of Antigen Discovery Inc. In addition, Xiaowu Liang and Angela Yee have an equity interest in Antigen Discovery Inc. The other authors declare non competing interests.Funding StatementNo external funding was used in this study.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:This study was approved by the Mayo Clinic Human Subjects Institutional Review Board and the Centers for Disease Control and Prevention Human Subjects Office.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.YesAll data are freely available. |
Impact and effectiveness of Rotavin-M1 under conditions of routine use in two provinces in Vietnam, 20162021, an observational and casecontrol study
VanTrang N , Tate JE , PhuongMai LT , Vu TD , Quyet NT , ThiLe LK , ThiChu MN , NgocTran MP , ThiPham TP , Nguyen HT , Hien ND , Jiang B , Yen C , Tran DN , Anh DD , Parashar UD , Anh LT , Thanh VD , Sanh LV , DieuThuy DT , Trang DC , Phong NQ , Truong DH , Tai TV , Dung PV , Van DV . Lancet Reg Health West Pac 2023 Background: Half of diarrhea hospitalizations in children aged <5 years in Vietnam are due to rotavirus. Following introduction of a locally developed and licensed oral rotavirus vaccine, Rotavin-M1, into the routine immunization program in two Vietnamese provinces, Nam Dinh and TT Hue, we describe changes in rotavirus positivity among children hospitalized for diarrhea and calculate vaccine effectiveness against moderate-to-severe rotavirus hospitalizations. Methods: Active rotavirus surveillance among children <5 years began in December 2016 at sentinel hospitals in districts where rotavirus vaccine was introduced in December 2017. To estimate reductions in rotavirus detection, we calculated risk ratios comparing rotavirus positivity pre- and post-vaccine introduction. We used a test-negative casecontrol design to calculate vaccine effectiveness. Findings: From December 2016 to May 2021, 7228 children <5 years hospitalized for diarrhea were enrolled. Following introduction, Rotavin-M1 coverage was 77% (1066/1377) in Nam Dinh and 42% (203/489) in TT Hue. In Nam Dinh, rotavirus positivity among children <5 years significantly declined by 40.6% (95% CI: 34.8%45.8%) during the three-year post-vaccine introduction period. In TT Hue, no change in rotavirus positivity was observed. Among children aged 623 months, a 2-dose series of Rotavin-M1 was 57% (95% CI: 39%70%) effective against moderate-to-severe rotavirus hospitalizations. Interpretation: Higher vaccination coverage in Nam Dinh than TT Hue likely contributed to substantial declines in rotavirus positivity observed in Nam Dinh following rotavirus vaccine introduction. Robust vaccine effectiveness was observed through the second year of life. National rotavirus vaccine introduction with high coverage may have substantial impact on reducing rotavirus disease burden in Vietnam. Funding: Bill and Melinda Gates Foundation. 2023 |
Impact and effectiveness of Rotavin-M1 under conditions of routine use in two provinces in Vietnam, 2016-2021, an observational and case-control study
Van Trang N , Tate JE , Phuong Mai LT , Vu TD , Quyet NT , Thi Le LK , Thi Chu MN , Ngoc Tran MP , Thi Pham TP , Nguyen HT , Hien ND , Jiang B , Yen C , Tran DN , Anh DD , Parashar UD , Anh LT , Thanh VD , Sanh LV , Dieu Thuy DT , Trang DC , Phong NQ , Truong DH , Tai TV , Dung PV , Van DV . Lancet Reg Health West Pac 2023 37 100789 Background: Half of diarrhea hospitalizations in children aged <5 years in Vietnam are due to rotavirus. Following introduction of a locally developed and licensed oral rotavirus vaccine, Rotavin-M1, into the routine immunization program in two Vietnamese provinces, Nam Dinh and TT Hue, we describe changes in rotavirus positivity among children hospitalized for diarrhea and calculate vaccine effectiveness against moderate-to-severe rotavirus hospitalizations. Methods: Active rotavirus surveillance among children <5 years began in December 2016 at sentinel hospitals in districts where rotavirus vaccine was introduced in December 2017. To estimate reductions in rotavirus detection, we calculated risk ratios comparing rotavirus positivity pre- and post-vaccine introduction. We used a test-negative case–control design to calculate vaccine effectiveness. Findings: From December 2016 to May 2021, 7228 children <5 years hospitalized for diarrhea were enrolled. Following introduction, Rotavin-M1 coverage was 77% (1066/1377) in Nam Dinh and 42% (203/489) in TT Hue. In Nam Dinh, rotavirus positivity among children <5 years significantly declined by 40.6% (95% CI: 34.8%–45.8%) during the three-year post-vaccine introduction period. In TT Hue, no change in rotavirus positivity was observed. Among children aged 6–23 months, a 2-dose series of Rotavin-M1 was 57% (95% CI: 39%–70%) effective against moderate-to-severe rotavirus hospitalizations. Interpretation: Higher vaccination coverage in Nam Dinh than TT Hue likely contributed to substantial declines in rotavirus positivity observed in Nam Dinh following rotavirus vaccine introduction. Robust vaccine effectiveness was observed through the second year of life. National rotavirus vaccine introduction with high coverage may have substantial impact on reducing rotavirus disease burden in Vietnam. Funding: Bill and Melinda Gates Foundation. © 2023 |
Comparing genomic variant identification protocols for Candida auris
Li X , Muñoz JF , Gade L , Argimon S , Bougnoux ME , Bowers JR , Chow NA , Cuesta I , Farrer RA , Maufrais C , Monroy-Nieto J , Pradhan D , Uehling J , Vu D , Yeats CA , Aanensen DM , d'Enfert C , Engelthaler DM , Eyre DW , Fisher MC , Hagen F , Meyer W , Singh G , Alastruey-Izquierdo A , Litvintseva AP , Cuomo CA . Microb Genom 2023 9 (4) Genomic analyses are widely applied to epidemiological, population genetic and experimental studies of pathogenic fungi. A wide range of methods are employed to carry out these analyses, typically without including controls that gauge the accuracy of variant prediction. The importance of tracking outbreaks at a global scale has raised the urgency of establishing high-accuracy pipelines that generate consistent results between research groups. To evaluate currently employed methods for whole-genome variant detection and elaborate best practices for fungal pathogens, we compared how 14 independent variant calling pipelines performed across 35 Candida auris isolates from 4 distinct clades and evaluated the performance of variant calling, single-nucleotide polymorphism (SNP) counts and phylogenetic inference results. Although these pipelines used different variant callers and filtering criteria, we found high overall agreement of SNPs from each pipeline. This concordance correlated with site quality, as SNPs discovered by a few pipelines tended to show lower mapping quality scores and depth of coverage than those recovered by all pipelines. We observed that the major differences between pipelines were due to variation in read trimming strategies, SNP calling methods and parameters, and downstream filtration criteria. We calculated specificity and sensitivity for each pipeline by aligning three isolates with chromosomal level assemblies and found that the GATK-based pipelines were well balanced between these metrics. Selection of trimming methods had a greater impact on SAMtools-based pipelines than those using GATK. Phylogenetic trees inferred by each pipeline showed high consistency at the clade level, but there was more variability between isolates from a single outbreak, with pipelines that used more stringent cutoffs having lower resolution. This project generated two truth datasets useful for routine benchmarking of C. auris variant calling, a consensus VCF of genotypes discovered by 10 or more pipelines across these 35 diverse isolates and variants for 2 samples identified from whole-genome alignments. This study provides a foundation for evaluating SNP calling pipelines and developing best practices for future fungal genomic studies. |
Implementing mailed colorectal cancer fecal screening tests in real-world primary care settings: Promising implementation practices and opportunities for improvement
Hohl SD , Maxwell AE , Sharma KP , Sun J , Vu TT , DeGroff A , Escoffery C , Schlueter D , Hannon PA . Prev Sci 2023 1-12 Colorectal cancer (CRC) screening reduces morbidity and mortality, but screening rates in the USA remain suboptimal. The Colorectal Cancer Control Program (CRCCP) was established in 2009 to increase screening among groups disproportionately affected. The CRCCP utilizes implementation science to support health system change as a strategy to reduce disparities in CRC screening by directing resources to primary care clinics to implement evidence-based interventions (EBIs) proven to increase CRC screening. As COVID-19 continues to impede in-person healthcare visits and compel the unpredictable redirection of clinic priorities, understanding clinics' adoption and implementation of EBIs into routine care is crucial. Mailed fecal testing is an evidence-based screening approach that offers an alternative to in-person screening tests and represents a promising approach to reduce CRC screening disparities. However, little is known about how mailed fecal testing is implemented in real-world settings. In this retrospective, cross-sectional analysis, we assessed practices around mailed fecal testing implementation in 185 clinics across 62 US health systems. We sought to (1) determine whether clinics that do and do not implement mailed fecal testing differ with respect to characteristics (e.g., type, location, and proportion of uninsured patients) and (2) identify implementation practices among clinics that offer mailed fecal testing. Our findings revealed that over half (58%) of clinics implemented mailed fecal testing. These clinics were more likely to have a CRC screening policy than clinics that did not implement mailed fecal testing (p = 0.007) and to serve a larger patient population (p = 0.004), but less likely to have a large proportion of uninsured patients (p = 0.01). Clinics that implemented mailed fecal testing offered it in combination with EBIs, including patient reminders (92%), provider reminders (94%), and other activities to reduce structural barriers (95%). However, fewer clinics reported having the leadership support (58%) or funding stability (29%) to sustain mailed fecal testing. Mailed fecal testing was widely implemented alongside other EBIs in primary care clinics participating in the CRCCP, but multiple opportunities for enhancing its implementation exist. These include increasing the proportion of community health centers/federally qualified health centers offering mailed screening; increasing the proportion that provide pre-paid return mail supplies with the screening kit; increasing the proportion of clinics monitoring both screening kit distribution and return; ensuring patients with abnormal tests can obtain colonoscopy; and increasing sustainability planning and support. |
Presence of Severe Acute Respiratory Syndrome Coronavirus 2 (SARS-CoV-2) Antibodies Among Vietnamese Healthcare Workers by Dosing Interval for ChAdOx1 nCoV-19 Vaccine.
Vu DM , Vu DTB , Do TTT , Olmsted AE , Dao BH , Thai TT , Nguyen CL , Le NTT , Le TA , Bui HTT , Pham TN , Moore MR . Clin Infect Dis 2022 75 S174-s181 BACKGROUND: Before the SARS-CoV-2 Delta variant arrived in Vietnam, case rates suggested seroprevalence of SARS-CoV-2 was low. Beginning in March 2021, we assessed different dosing schedules and adverse events following immunization (AEFIs) for ChAdOx1 nCoV-19 vaccine among healthcare workers (HCWs). METHODS: We performed a prospective cohort study to estimate the prevalence of IgG antibodies to SARS-CoV-2 before and after ChAdOx1 nCoV-19 vaccination. We conducted antibody testing among HCWs in February 2021 (baseline), before the second dose (June-July 2021), and 1 and 3 months after the second dose. We detected antibodies to SARS-CoV-2 using Tetracore® FlexImmArray™, and surrogate neutralizing antibodies using GenScript cPass™. Neither assay can distinguish natural from vaccine-induced antibodies. We assessed AEFIs through interview post-dose 1 and 1 month post-dose 2. RESULTS: Before vaccination, 1/617 participants (0.16%) had antibodies to SARS-CoV-2. Of these 617, 405 were vaccinated with ChAdOx1 nCoV-19 with 4-8- (60%), 9-12- (27%), or ≥13-week (13%) intervals between the 2 doses. Three months following series completion, 99% and 97% of vaccinated participants had ≥1 sample with detectable antibodies and surrogate neutralizing antibodies against SARS-CoV-2, respectively. We observed no significant differences among those with different dosing intervals at last follow-up. All participants reported PCR testing for SARS-CoV-2 during the study; 2 (0.5%) were laboratory-confirmed. AEFIs were more frequent post-dose 1 (81%) vs post-dose 2 (21%). CONCLUSIONS: In this population, regardless of dosing interval, ChAdOx1 nCoV-19 induced antibodies within 3 months of the second dose. These findings may offer flexibility to policymakers when balancing programmatic considerations with vaccine effectiveness. |
Identifying context-specific domains for assessing antimicrobial stewardship programmes in Asia: protocol for a scoping review
Vu HTL , Hamers RL , Limato R , Limmathurotsakul D , Karkey A , Dodds Ashley E , Anderson D , Patel PK , Patel TS , Lessa FC , van Doorn HR . BMJ Open 2022 12 (9) e061286 INTRODUCTION: Antimicrobial stewardship (AMS) is an important strategy to control antimicrobial resistance. Resources are available to provide guidance for design and implementation of AMS programmes, however these may have limited applicability in resource-limited settings including those in Asia. This scoping review aims to identify context-specific domains and items for the development of a healthcare facility (HCF)-level tool to guide AMS implementation in Asia. METHODS AND ANALYSIS: This review is the first step in a larger project to assess AMS implementation, needs and gaps in Asia. We will employ a deductive qualitative approach to identify locally appropriate domains and items of AMS implementation guided by Nilsen and Bernhardsson's contextual dimensions. This process is also informed by discussions from a technical advisory group coordinated by the US Centers for Disease Control and Prevention to develop an AMS HCF-level assessment tool for low-income and middle-income countries. We will review English-language documents that discuss HCF-level implementation, including those describing frameworks, components/elements or recommendations for design, implementation or assessment globally and specific to Asia. We have performed the search in August-September 2021 including general electronic databases (MEDLINE, Embase, Web of Science and Google Scholar), region-specific databases, national action plans, grey literature sources and reference lists to identify eligible documents. Country-specific documents will be restricted to countries in three subregions: South Asia, East Asia and Southeast Asia. Codes and themes will be derived through a content analysis, classified following the predefined context dimensions and used for developing domains and items of the assessment tool. ETHICS AND DISSEMINATION: Results from this review will feed into our stepwise process for developing a context-specific HCF-level assessment tool for AMS programmes to assess the implementation status, identify intervention opportunities and monitor progress over time. The process will be done in consultation with local stakeholders, the end-users of the generated knowledge. |
Point Prevalence Estimates of Activity-Limiting Long-Term Symptoms among U.S. Adults ≥1 Month After Reported SARS-CoV-2 Infection, November 1, 2021.
Tenforde MW , Devine OJ , Reese HE , Silk BJ , Iuliano AD , Threlkel R , Vu QM , Plumb ID , Cadwell BL , Rose C , Steele MK , Briggs-Hagen M , Ayoubkhani D , Pawelek P , Nafilyan V , Saydah SH , Bertolli J . J Infect Dis 2023 227 (7) 855-863 BACKGROUND: Although most adults infected with severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) fully recover, a proportion have ongoing symptoms, or post-COVID conditions (PCC), after infection. The objective of this analysis was to estimate the number of United States (US) adults with activity-limiting PCC on 1 November 2021. METHODS: We modeled the prevalence of PCC using reported infections occurring from 1 February 2020 to 30 September 2021, and population-based, household survey data on new activity-limiting symptoms ≥1 month following SARS-CoV-2 infection. From these data sources, we estimated the number and proportion of US adults with activity-limiting PCC on 1 November 2021 as 95% uncertainty intervals, stratified by sex and age. Sensitivity analyses adjusted for underascertainment of infections and uncertainty about symptom duration. RESULTS: On 1 November 2021, at least 3.0-5.0 million US adults, or 1.2%-1.9% of the US adult population, were estimated to have activity-limiting PCC of ≥1 month's duration. Population prevalence was higher in females (1.4%-2.2%) than males. The estimated prevalence after adjusting for underascertainment of infections was 1.7%-3.8%. CONCLUSIONS: Millions of US adults were estimated to have activity-limiting PCC. These estimates can support future efforts to address the impact of PCC on the US population. |
Development of a field guide for assessing readiness to implement evidence-based cancer screening interventions in primary care clinics
Hohl SD , Melillo S , Vu TT , Escoffery C , DeGroff A , Schlueter D , Ross LW , Maxwell AE , Sharma KP , Boehm J , Joseph D , Hannon PA . Prev Chronic Dis 2022 19 E25 Evidence-based interventions, including provider assessment and feedback, provider reminders, patient reminders, and reduction of structural barriers, improve colorectal cancer screening rates. Assessing primary care clinics' readiness to implement these interventions can help clinics use strengths, identify barriers, and plan for success. However, clinics may lack tools to assess readiness and use findings to plan for successful implementation. To address this need, we developed the Field Guide for Assessing Readiness to Implement Evidence-Based Cancer Screening Interventions (Field Guide) for the Centers for Disease Control and Prevention's (CDC's) Colorectal Cancer Control Program (CRCCP). We conducted a literature review of evidence and existing tools to measure implementation readiness, reviewed readiness tools from selected CRCCP award recipients (n = 35), and conducted semi-structured interviews with key informants (n = 8). We sought feedback from CDC staff and recipients to inform the final document. The Field Guide, which is publicly available online, outlines 4 assessment phases: 1) convene team members and determine assessment activities, 2) design and administer the readiness assessment, 3) evaluate assessment data, and 4) develop an implementation plan. Assessment activities and tools are included to facilitate completion of each phase. The Field Guide integrates implementation science and practical experience into a relevant tool to bolster clinic capacity for implementation, increase potential for intervention sustainability, and improve colorectal cancer screening rates, with a focus on patients served in safety net clinic settings. Although this tool was developed for use in primary care clinics for cancer screening, the Field Guide may have broader application for clinics and their partners for other chronic diseases. |
Seroprevalence and associated risk factors of trichinellosis and T. Solium cysticercosis in indigenous pigs in Hoa Binh Province, Vietnam
Le TT , Vu-Thi N , Dang-Xuan S , Nguyen-Viet H , Pham-Duc P , Nguyen-Thanh L , Pham-Thi N , Noh J , Mayer-Scholl A , Baumann M , Meemken D , Unger F . Trop Med Infect Dis 2022 7 (4) Trichinellosis and cysticercosis remain challenges to human health and animal productivity worldwide, especially in developing countries. While information on the occurrence of both diseases is infrequent, they are endemic in parts of Vietnam and mainly related to indigenous pigs kept by ethnic minorities. This study aimed to determine the seroprevalence and risk factors of both diseases in indigenous pigs and explore the perception and awareness of both human and pig trichinellosis and cysticercosis of pig farmers. A total of 352 pig sera samples from 131 holdings were collected and analyzed using ELISA antibody tests in six communes in the Da Bac districts of Hoa Binh province, Vietnam. A survey was conducted with representatives from these households to understand the knowledge and perspective on food-borne parasitic diseases. Overall, the seroprevalence of trichinellosis and T. solium cysticercosis was 13.6% (95% CI 10.2-17.7) and 1.7% (95% CI 0.6-3.7), respectively. The seroprevalence of trichinellosis was significantly higher in female and older pigs. Risk perception and knowledge of interviewed people on both human and pig trichinellosis and cysticercosis of pig farmers was poor. Risky practices, including free roaming of pigs and eating undercooked or fermented pork, were observed. Educational and awareness campaigns aligned with further research on feasible practice changes are critical to addressing these issues. |
Prevalence, anatomic distribution, and correlates of Chlamydia trachomatis and Neisseria gonorrhoeae infections among a cohort of men who have sex with men in Hanoi, Vietnam
Adamson PC , Bhatia R , Tran KDC , Bui HTM , Vu D , Shiraishi RW , Giang LM . Sex Transm Dis 2022 49 (7) 504-510 BACKGROUND: Neisseria gonorrhoeae (NG) and Chlamydia trachomatis (CT) disproportionately affect men who have sex with men (MSM). Data on the prevalence, anatomical distribution, and correlates of NG and CT infections among MSM in Vietnam are limited. METHODS: Between July 2017 and April 2019, MSM 16 years or older, without HIV were enrolled into an observational cohort study. Baseline data, including sociodemographics, sexual behavior, and HIV status were collected. NG and CT testing were performed on urine, rectal, and pharyngeal specimens. Multivariate logistic regression models identified factors associated with NG and CT infections at baseline. RESULTS: In total, 1489 participants underwent NG/CT testing. The median age was 22 years (IQR: 20 - 26). There were 424 (28.5%) NG or CT infections; 322 (21.6%) with CT and 173 (11.6%) with NG. Rectal infections were most common for CT (73.9%), while pharyngeal infections were most common for NG (70.5%). Independent risk factors for CT or NG infection included: ≥2 sex partners in the prior month (adjusted odds ratio [aOR] = 2.04; 95% CI: 1.44, 2.91), condomless anal sex (aOR = 1.44, 95% CI: 1.12, 1.86), and meeting sex partners online (aOR = 1.35; 95% CI: 1.03, 1.76). Recent genitourinary or rectal symptoms were not associated with infections. CONCLUSIONS: The overall and extragenital prevalence of NG and CT infections were high within this sample of young MSM without HIV in Hanoi. Testing limited to urethral specimens would have missed nearly three-quarters of CT and NG infections, supporting the need for routine testing at multiple anatomic sites. |
Financial navigation: Staff perspectives on patients' financial burden of cancer care
Yeager KA , Zahnd WE , Eberth JM , Vanderpool RC , Rohweder C , Teal R , Vu M , Stradtman L , Frost EL , Trapl E , Gonzalez SK , Vu T , Ko LK , Cole A , Farris PE , Shannon J , Askelson N , Seegmiller L , White A , Edward J , Davis M , Petermann V , Wheeler SB . J Cancer Surviv 2022 PURPOSE: To describe perceptions of financial navigation staff concerning patients' cancer-related financial burden. METHODS: This qualitative descriptive study used a semi-structured interview guide to examine perceptions of financial navigation staff concerning patients' cancer-related financial burden. Staff who provided financial navigation support services to cancer patients were interviewed from different types of cancer programs across seven states representing rural, micropolitan, and urban settings. Interviews lasted approximately one hour, were audio recorded, and transcribed. Transcripts were double coded for thematic analysis. RESULTS: Thirty-five staff from 29 cancer centers were interviewed. The first theme involved communication issues related to patient and financial navigation staff expectations, timing and the sensitive nature of financial discussions. The second theme involved the multi-faceted impact of financial burden on patients, including stress, difficulty adhering to treatments, and challenges meeting basic, non-medical needs. CONCLUSIONS AND IMPLICATIONS FOR CANCER SURVIVORS: Cancer-related financial burden has a profound impact on cancer survivors' health and non-health outcomes. Discussions regarding cancer-related costs between cancer survivors and healthcare team members could help to normalize conversations and mitigate the multi-faceted determinants and effects of cancer-related financial burden. As treatment may span months and years and unexpected costs arise, having this discussion regularly and systematically is needed. |
How cancer programs identify and address the financial burdens of rural cancer patients
Petermann V , Zahnd WE , Vanderpool RC , Eberth JM , Rohweder C , Teal R , Vu M , Stradtman L , Frost E , Trapl E , Koopman Gonzalez S , Vu T , Ko LK , Cole A , Farris PE , Shannon J , Lee J , Askelson N , Seegmiller L , White A , Edward J , Davis M , Wheeler SB . Support Care Cancer 2021 30 (3) 2047-2058 PURPOSE: Financial toxicity is associated with negative patient outcomes, and rural populations are disproportionately affected by the high costs of cancer care compared to urban populations. Our objective was to (1) understand cancer programs' perceptions of rural-urban differences in cancer patients' experiences of financial hardship, (2) evaluate the resources available to cancer patients across the rural-urban continuum, and (3) determine how rural and urban health care teams assess and address financial distress in cancer patients. METHODS: Seven research teams within the Cancer Prevention and Research Control Network conducted semi-structured interviews with cancer program staff who have a role in connecting cancer patients with financial assistance services in both rural and urban counties. Interviews were audio-recorded and transcribed. We identified themes using descriptive content and thematic analysis. RESULTS: We interviewed 35 staffs across 29 cancer care programs in seven states, with roughly half of respondents from programs in rural counties. Participants identified differences in rural and urban patients' experiences of financial hardship related to distance required to travel for treatment, underinsurance, and low socioeconomic status. Insufficient staffing was an identified barrier to addressing rural and urban patients' financial concerns. CONCLUSIONS: Improved financial navigation services could mitigate the effects of financial toxicity experienced by cancer patients, particularly rural patients, throughout treatment and survivorship. Future research is needed to improve how cancer programs assess financial hardship in patients and to expand financial navigation services to better serve rural cancer patients. |
Unmet needs and barriers to services among people who inject drugs with HIV in the United States
Dasgupta S , Tie Y , Beer L , Broz D , Vu Q . J HIV AIDS Soc Serv 2021 20 (4) 271-284 Data on use of and barriers to HIV ancillary care services among people who inject drugs (PWID) with HIV can inform interventions intended to improve access to care, but national estimates are lacking. We analyzed data on PWID with HIV from the CDC Medical Monitoring Project. Overall, 79% had an unmet need for ≥1 service. Services with the highest unmet need included: dental care (38%), drug/alcohol treatment (20%), transportation assistance (20%), and HIV peer group support (20%). Unmet needs for mental health services (13% vs. 23%) and HIV peer group support (15% vs. 29%) were lower among persons attending Ryan White HIV/AIDS Program (RWHAP)-funded facilities for HIV care. Barriers to care services varied by service type. Modeling components of the RWHAP structure in non-RWHAP funded facilities, including integration of support services and use of patient navigation services in the HIV medical care setting, may improve outcomes among PWID with HIV. ©, This work was authored as part of the Contributor's official duties as an Employee of the United States Government and is therefore a work of the United States Government. In accordance with 17 U.S.C. 105, no copyright protection is available for such works under U.S. Law. |
Deaths in Children and Adolescents Associated With COVID-19 and MIS-C in the United States.
McCormick DW , Richardson LC , Young PR , Viens LJ , Gould CV , Kimball A , Pindyck T , Rosenblum HG , Siegel DA , Vu QM , Komatsu K , Venkat H , Openshaw JJ , Kawasaki B , Siniscalchi AJ , Gumke M , Leapley A , Tobin-D'Angelo M , Kauerauf J , Reid H , White K , Ahmed FS , Richardson G , Hand J , Kirkey K , Larson L , Byers P , Garcia A , Ojo M , Zamcheck A , Lash MK , Lee EH , Reilly KH , Wilson E , de Fijter S , Naqvi OH , Harduar-Morano L , Burch AK , Lewis A , Kolsin J , Pont SJ , Barbeau B , Bixler D , Reagan-Steiner S , Koumans EH . Pediatrics 2021 148 (5) OBJECTIVES: To describe the demographics, clinical characteristics, and hospital course among persons <21 years of age with a severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2)-associated death. METHODS: We conducted a retrospective case series of suspected SARS-CoV-2-associated deaths in the United States in persons <21 years of age during February 12 to July 31, 2020. All states and territories were invited to participate. We abstracted demographic and clinical data, including laboratory and treatment details, from medical records. RESULTS: We included 112 SARS-CoV-2-associated deaths from 25 participating jurisdictions. The median age was 17 years (IQR 8.5-19 years). Most decedents were male (71, 63%), 31 (28%) were Black (non-Hispanic) persons, and 52 (46%) were Hispanic persons. Ninety-six decedents (86%) had at least 1 underlying condition; obesity (42%), asthma (29%), and developmental disorders (22%) were most commonly documented. Among 69 hospitalized decedents, common complications included mechanical ventilation (75%) and acute respiratory failure (82%). The sixteen (14%) decedents who met multisystem inflammatory syndrome in children (MIS-C) criteria were similar in age, sex, and race and/or ethnicity to decedents without MIS-C; 11 of 16 (69%) had at least 1 underlying condition. CONCLUSIONS: SARS-CoV-2-associated deaths among persons <21 years of age occurred predominantly among Black (non-Hispanic) and Hispanic persons, male patients, and older adolescents. The most commonly reported underlying conditions were obesity, asthma, and developmental disorders. Decedents with coronavirus disease 2019 were more likely than those with MIS-C to have underlying medical conditions. |
Volatile organic compounds in mainstream smoke of sixty domestic little cigar products
Vu AT , Hassink MD , Taylor KM , McGuigan M , Blasiole A , Valentin-Blasini L , Williams K , Watson CH . Chem Res Toxicol 2021 34 (3) 704-712 The mainstream smoke yields of five volatile organic compounds (VOCs) were determined from 60 commercial U.S. little cigar products under ISO 3308 and Canadian Intense (CI) smoking regimens on linear smoking machines using a gas sampling bag collection. The five VOCs, 1,3-butadiene, acrylonitrile, benzene, isoprene, and toluene were analyzed using an automated GC/MS analytical method validated for measuring various VOCs in mainstream smoke. The VOCs range in amounts from micrograms to milligrams per little cigar. VOC deliveries vary considerably among the little cigar products under the ISO smoking regimen primarily due to varying filter ventilation. Under the CI smoking regimen where filter ventilation is blocked, the delivery range narrows, although individual and total VOC yields are approximately 2 fold higher than those under the ISO smoking regimen. Correlation analysis reveals strong associations between acrylonitrile and 1,3-butadiene or toluene under the ISO smoking regimen. Compared to cigarettes, little cigars delivered substantially higher VOC mainstream smoke yields under both ISO and CI smoking regimens. Moreover, little cigar smoke also contains higher VOCs than cigarette smoke when adjusted for mass of tobacco. |
Substantial need for PrEP among MSM in Hanoi, Vietnam
Bhatia R , Le Minh G , Thanh LA , Thai TT , Bui H , Ngoc LB , Vu D , Abdul-Quader A . Sex Transm Dis 2020 48 (5) e56-e58 We utilized data from the HIM-Hanoi cohort to determine the proportion of HIV-negative MSM with PrEP indications in Hanoi. Among 717 MSM, 537 (72.2% [66.6-77.3%]) had ≥1 PrEP indication, signaling substantial need for PrEP scale-up. Condomless anal intercourse was the most frequent indication (68.7% [60.3-76.1%]), followed by previous/current STI (59.4% [51.0-67.2%]). |
Estimated additional number of adults in HIV care who have an indication for hepatitis A vaccination following 2020 US guideline update
Weiser JK , Vu QM , Dasgupta S , Nelson NP , Shouse RL . J Acquir Immune Defic Syndr 2020 85 (2) e29-e31 People with HIV (PWH) who contract hepatitis A may have higher level and prolonged hepatitis A viremia with an increased potential to transmit hepatitis A.1,2 Many PWH have risk factors for which hepatitis A vaccination is recommended, including male-to-male sexual contact, injection and noninjection drug use, homelessness, and chronic liver disease.3,4 However, in February 2020, the U.S. Advisory Committee on Immunization Practices (ACIP) recommended that all PWH age $ 1 year be routinely vaccinated for hepatitis A (https://www.cdc.gov/vaccines/schedules/index.html). The number of additional adults receiving HIV care who have an indication for vaccination based on the 2020 ACIP update is unknown and could inform public health practice and resource allocation. |
Changes in HIV antiretroviral prescribing practices in the United States
Vu QM , Shouse RL , Brady K , Brooks JT , Weiser J . Int J STD AIDS 2019 31 (1) 22-29 We analyzed nationally representative medical record data from the Medical Monitoring Project (MMP) to estimate prevalence of antiretroviral (ARV) agents prescribed for US adults with diagnosed HIV and to examine recent changes in prescribing practices. The MMP uses a multi-stage sample survey methodology to produce nationally representative annual estimates of characteristics of adults with diagnosed HIV in the US and Puerto Rico. We compared weighted prevalence of most recent ARV prescriptions from 3368 adults interviewed during June 2015–May 2016 and from 3717 adults interviewed during June 2016–May 2017. We also compared weighted prevalence of the first ARV prescriptions among those who initiated ART during these time periods. Among patients initiating antiretroviral therapy (ART), prescription of non-nucleoside reverse transcriptase inhibitors (NNRTIs) as part of initial regimen decreased across the time periods from 38.5% to 26.6% (P = 0.01). Prescription of protease inhibitors (PI) did not change (17.0% and 14.5%). Prescription of integrase strand transfer inhibitors (INSTIs) increased (54.7 to 70.2%, P = 0.004) due mostly to increased prescription of dolutegravir (13.9% to 32.5%). Among all patients, prescription of NNRTIs remained stable across (44.5% and 43.2%). Prescriptions of PIs decreased significantly, from 36.5% to 32.4% (P = 0.006), as did prescription of individual PIs except darunavir. In contrast, prescription of INSTIs increased from 43.4% to 50.7% (P < 0.001), due mostly to increased prescription of dolutegravir and elvitegravir. ART prescribing practices changed rapidly across the examined time periods. Following guidelines, INSTI prescription increased significantly among all U.S adults with diagnosed HIV, including adults initiating ART. © The Author(s) 2019. |
Patient navigator reported patient barriers and delivered activities in two large federally-funded cancer screening programs
Barrington WE , DeGroff A , Melillo S , Vu T , Cole A , Escoffery C , Askelson N , Seegmiller L , Gonzalez SK , Hannon P . Prev Med 2019 129S 105858 Few data are available on patient navigators (PNs) across diverse roles and organizational settings that could inform optimization of patient navigation models for cancer prevention. The National Breast and Cervical Cancer Early Detection Program (NBCCEDP) and the Colorectal Cancer and Control Program (CRCCP) are two federally-funded screening programs that support clinical- and community-based PNs who serve low-income and un- or underinsured populations across the United States. An online survey assessing PN characteristics, delivered activities, and patient barriers to screening was completed by 437 of 1002 identified PNs (44%). Responding PNs were racially and ethnically diverse, had varied professional backgrounds and practice-settings, worked with diverse populations, and were located within rural and urban/suburban locations across the U.S. More PNs reported working to promote screening for breast/cervical cancers (BCC, 94%) compared to colorectal cancer (CRC, 39%). BCC and CRC PNs reported similar frequencies of individual- (e.g., knowledge, motivation, fear) and community-level patient barriers (e.g., beliefs about healthcare and screening). Despite reporting significant patient structural barriers (e.g., transportation, work and clinic hours), most BCC and CRC PNs delivered individual-level navigation activities (e.g., education, appointment reminders). PN training to identify and champion timely and patient-centered adjustments to organizational policies, practices, and norms of the NBCCEDP, CRCCP, and partner organizations may be beneficial. More research is needed to determine whether multilevel interventions that support this approach could reduce structural barriers and increase screening and diagnostic follow-up among the marginalized communities served by these two important cancer-screening programs. |
Adoption and implementation of evidence-based colorectal cancer screening interventions among cancer control program grantees, 2009-2015
Hannon PA , Maxwell AE , Escoffery C , Vu T , Kohn MJ , Gressard L , Dillon-Sumner L , Mason C , DeGroff A . Prev Chronic Dis 2019 16 E139 PURPOSE AND OBJECTIVES: Colorectal cancer (CRC) is the second-leading cause of cancer death in the United States. Although effective CRC screening tests exist, CRC screening is underused. Use of evidence-based interventions (EBIs) to increase CRC screening could save many lives. The Colorectal Cancer Control Program (CRCCP) of the Centers for Disease Control and Prevention (CDC) provides a unique opportunity to study EBI adoption, implementation, and maintenance. We assessed 1) the number of grantees implementing 5 EBIs during 2011 through 2015, 2) grantees' perceived ease of implementing each EBI, and 3) grantees' reasons for stopping EBI implementation. INTERVENTION APPROACH: CDC funded 25 states and 4 tribal entities to participate in the CRCCP. Grantees used CRCCP funds to 1) provide CRC screening to individuals who were uninsured and low-income, and 2) promote CRC screening at the population level. One component of the CRC screening promotion effort was implementing 1 or more of 5 EBIs to increase CRC screening rates. EVALUATION METHODS: We surveyed CRCCP grantees about EBI implementation with an online survey in 2011, 2012, 2013, and 2015. We conducted descriptive analyses of closed-ended items and coded open-text responses for themes related to barriers and facilitators to EBI implementation. RESULTS: Most grantees implemented small media (>/=25) or client reminders (>/=21) or both all program years. Although few grantees reported implementation of EBIs such as reducing structural barriers (n = 14) and provider reminders (n = 9) in 2011, implementation of these EBIs increased over time. Implementation of provider assessment and feedback increased over time, but was reported by the fewest grantees (n = 17) in 2015. Reasons for discontinuing EBIs included funding ending, competing priorities, or limited staff capacity. IMPLICATIONS FOR PUBLIC HEALTH: CRCCP grantees implemented EBIs across all years studied, yet implementation varied by EBI and did not get easier with time. Our findings can inform long-term planning for EBIs with state and tribal public health institutions and their partners. |
One hypervirulent clone, sequence type 283, accounts for a large proportion of invasive Streptococcus agalactiae isolated from humans and diseased tilapia in Southeast Asia.
Barkham T , Zadoks RN , Azmai MNA , Baker S , Bich VTN , Chalker V , Chau ML , Dance D , Deepak RN , van Doorn HR , Gutierrez RA , Holmes MA , Huong LNP , Koh TH , Martins E , Mehershahi K , Newton P , Ng LC , Phuoc NN , Sangwichian O , Sawatwong P , Surin U , Tan TY , Tang WY , Thuy NV , Turner P , Vongsouvath M , Zhang D , Whistler T , Chen SL . PLoS Negl Trop Dis 2019 13 (6) e0007421 BACKGROUND: In 2015, Singapore had the first and only reported foodborne outbreak of invasive disease caused by the group B Streptococcus (GBS; Streptococcus agalactiae). Disease, predominantly septic arthritis and meningitis, was associated with sequence type (ST)283, acquired from eating raw farmed freshwater fish. Although GBS sepsis is well-described in neonates and older adults with co-morbidities, this outbreak affected non-pregnant and younger adults with fewer co-morbidities, suggesting greater virulence. Before 2015 ST283 had only been reported from twenty humans in Hong Kong and two in France, and from one fish in Thailand. We hypothesised that ST283 was causing region-wide infection in Southeast Asia. METHODOLOGY/PRINCIPAL FINDINGS: We performed a literature review, whole genome sequencing on 145 GBS isolates collected from six Southeast Asian countries, and phylogenetic analysis on 7,468 GBS sequences including 227 variants of ST283 from humans and animals. Although almost absent outside Asia, ST283 was found in all invasive Asian collections analysed, from 1995 to 2017. It accounted for 29/38 (76%) human isolates in Lao PDR, 102/139 (73%) in Thailand, 4/13 (31%) in Vietnam, and 167/739 (23%) in Singapore. ST283 and its variants were found in 62/62 (100%) tilapia from 14 outbreak sites in Malaysia and Vietnam, in seven fish species in Singapore markets, and a diseased frog in China. CONCLUSIONS: GBS ST283 is widespread in Southeast Asia, where it accounts for a large proportion of bacteraemic GBS, and causes disease and economic loss in aquaculture. If human ST283 is fishborne, as in the Singapore outbreak, then GBS sepsis in Thailand and Lao PDR is predominantly a foodborne disease. However, whether transmission is from aquaculture to humans, or vice versa, or involves an unidentified reservoir remains unknown. Creation of cross-border collaborations in human and animal health are needed to complete the epidemiological picture. |
Cost-effectiveness of increased influenza vaccination uptake against readmissions of major adverse cardiac events in the US.
Peasah SK , Meltzer MI , Vu M , Moulia DL , Bridges CB . PLoS One 2019 14 (4) e0213499 BACKGROUND: Although influenza vaccination has been shown to reduce the incidence of major adverse cardiac events (MACE) among those with existing cardiovascular disease (CVD), in the 2015-16 season, coverage for persons with heart disease was only 48% in the US. METHODS: We built a Monte Carlo (probabilistic) spreadsheet-based decision tree in 2018 to estimate the cost-effectiveness of increased influenza vaccination to prevent MACE readmissions. We based our model on current US influenza vaccination coverage of the estimated 493,750 US acute coronary syndrome (ACS) patients from the healthcare payer perspective. We excluded outpatient costs and time lost from work and included only hospitalization and vaccination costs. We also estimated the incremental cost/MACE case averted and incremental cost/QALY gained (ICER) if 75% hospitalized ACS patients were vaccinated by discharge and estimated the impact of increasing vaccination coverage incrementally by 5% up to 95% in a sensitivity analysis, among hospitalized adults aged >/= 65 years and 18-64 years, and varying vaccine effectiveness from 30-40%. RESULT: At 75% vaccination coverage by discharge, vaccination was cost-saving from the healthcare payer perspective in adults >/= 65 years and the ICER was $12,680/QALY (95% CI: 6,273-20,264) in adults 18-64 years and $2,400 (95% CI: -1,992-7,398) in all adults 18 + years. These resulted in ~ 500 (95% CI: 439-625) additional averted MACEs/year for all adult patients aged >/=18 years and added ~700 (95% CI: 578-825) QALYs. In the sensitivity analysis, vaccination becomes cost-saving in adults 18+years after about 80% vaccination rate. To achieve 75% vaccination rate in all adults aged >/= 18 years will require an additional cost of $3 million. The effectiveness of the vaccine, cost of vaccination, and vaccination coverage rate had the most impact on the results. CONCLUSION: Increasing vaccination rate among hospitalized ACS patients has a favorable cost-effectiveness profile and becomes cost-saving when at least 80% are vaccinated. |
Viral load testing to monitor the HIV epidemic among PWID in Vietnam
Khuu NV , Nguyen TV , Tran HP , Nguyen PD , Vu TX , Tran T , Vu DT , Le GT , Bui DH , Thanh DC , Tieu VT , Nguyen LN , Phan HT , Abdul-Quader A . Online J Public Health Inform 2018 10 (1) To share Vietnam’s experiences piloting the integration of viral load (VL) testing into the national HIV sentinel surveillance (HSS) system to better understand the level of HIV viral transmission among people who inject drugs (PWID). |
Healthcare expenditures for privately insured US patients with cystic fibrosis, 2010-2016
Grosse SD , Do TQN , Vu M , Feng LB , Berry JG , Sawicki GS . Pediatr Pulmonol 2018 53 (12) 1611-1618 OBJECTIVES: Published cost estimates for cystic fibrosis (CF) are based on older data and do not reflect increased use of specialty drugs in recent years. We assessed recent trends in healthcare expenditures for CF patients in the United States (US) with employer-sponsored health insurance. METHODS: The study is a retrospective analysis of claims data for privately insured individuals aged 0-64 years who were continuously enrolled in non-capitated plans for at least 1 calendar year during 2010-2016. Mean annual expenditures during a calendar year were calculated for individuals who met a claims-based CF case definition. Average annual growth rates were calculated through linear regression of the natural logarithm of annual expenditures. RESULTS: The annual CF prevalence was 1.1-1.4 per 10 000 adults and 2.9-3.0 per 10 000 children. Average spending adjusted for inflation nearly doubled from roughly $67 000 per patient in 2010 and 2011 to approximately $131 000 per patient in 2016. Inflation-adjusted spending on outpatient and inpatient care increased by 0.5% and 2.5% per year, respectively, whereas pharmaceutical spending increased by 20.2% per year. Virtually all of the growth in pharmaceutical spending was accounted for by spending on specialty drugs; inflation-adjusted spending on other medications increased by 1.3% per year. The annual growth rate in pharmaceutical spending rose by 33.1% during 2014-2016, the years during which lumacaftor/ivacaftor was introduced. CONCLUSIONS: Per-patient expenditures for privately-insured patients with CF almost doubled during 2010-2016; specialty drugs were largely responsible for this increase, with a major contribution from new, genotype-targeted CFTR modulator medications. |
Zika preparedness and response in Viet Nam
Nguyen DT , Do HT , Le HX , Le NT , Vien MQ , Nguyen TB , Phan LT , Nguyen TV , Luong QC , Phan HC , Diep HT , Pham QD , Nguyen TV , Huynh LK , Nguyen DC , Pham HT , Ly KK , Tran HN , Tran PD , Dang TQ , Pham H , Vu LN , Mounts A , Balajee SA , Nolen LD . Western Pac Surveill Response J 2018 9 (2) 1-3 The findings and conclusions in this article are those of the authors and do not necessarily represent the official positions of the United States Centers for Disease Control and Prevention. |
Visualizing colonoscopy capacity for public health use
Vu MH , Tran JL . Prev Chronic Dis 2018 15 E75 In North Dakota, colorectal cancer (CRC) is the third most commonly diagnosed type of cancer and ranks second in late-stage diagnosis among all cancers (2). The public health community has prioritized improving colorectal cancer screening rates in North Dakota, which are currently at 64.7% (3). As a result, it is important to use and effectively communicate data in the process of developing strategies and making decisions. |
Seroepidemiological studies of arboviruses in Africa
Gudo ES , Ali S , Antonio VS , Chelene IR , Chongo I , Demanou M , Falk K , Guiliche OC , Heinrich N , Monteiro V , Muianga AF , Oludele J , Mula F , Mutuku F , Amade N , Alho P , Betsem E , Chimbuinhe Z , Cristovam AJ , Galano G , Gessain A , Harris E , Heise M , Inalda F , Jala I , Jaszi E , King C , Kitron U , Kummerer BM , LaBeaud AD , Lagerqvist N , Malai G , Mazelier M , Mendes S , Mukoko D , Ndenga B , Njouom R , Pinto G , Tivane A , Vu DM , Vulule J . Adv Exp Med Biol 2018 1062 361-371 The literature on sero-epidemiological studies of flaviviral infections in the African continent is quite scarce. Much of the viral epidemiology studies have been focussing on diseases such as HIV/AIDS because of their sheer magnitude and impact on the lives of people in the various affected countries. Increasingly disease outbreaks caused by arboviruses such as the recent cases of chikungunya virus, dengue virus and yellow fever virus have prompted renewed interest in studying these viruses. International agencies from the US, several EU nations and China are starting to build collaborations to build capacity in many African countries together with established institutions to conduct these studies. The Tofo Advanced Study Week (TASW) was established to bring the best scientists from the world to the tiny seaside town of Praia do Tofo to rub shoulders with African virologists and discuss cutting-edge science and listen to the work of researchers in the field. In 2015 the 1st TASW focussed on Ebola virus. The collections of abstracts from participants at the 2nd TASW which focused on Dengue and Zika virus as well as presentations on other arboviruses are collated in this chapter. |
Expanding severe acute respiratory infection (SARI) surveillance beyond influenza: The process and data from 1 year of implementation in Vietnam
Alroy KA , Do TT , Tran PD , Dang TQ , Vu LN , Le NTH , Dang AD , Ngu ND , Ngo TH , Hoang PMV , Phan LT , Nguyen TV , Nguyen LT , Nguyen TV , Vien MQ , Le HX , Dao AT , Nguyen TB , Pham DT , Nguyen VTT , Pham TN , Phan BH , Whitaker B , Do TTT , Dao PA , Balajee SA , Mounts AW . Influenza Other Respir Viruses 2018 12 (5) 632-642 BACKGROUND: In 2016, as a component of the Global Health Security Agenda, the Vietnam Ministry of Health expanded its existing influenza sentinel surveillance for severe acute respiratory infections (SARI) to include testing for 7 additional viral respiratory pathogens. This article describes the steps taken to implement expanded SARI surveillance in Vietnam and reports data from 1 year of expanded surveillance. METHOD: The process of expanding the suite of pathogens for routine testing by real-time reverse transcriptase-polymerase chain reaction (rRT-PCR) included laboratory trainings, procurement/distribution of reagents, and strengthening and aligning SARI surveillance epidemiology practices at sentinel sites and regional institutes (RI). RESULTS: Surveillance data showed that of 4,003 specimens tested by the RI laboratories, 20.2% (n = 810) were positive for influenza virus. Of the 3,193 influenza-negative specimens, 41.8% (n = 1,337) were positive for at least 1 non-influenza respiratory virus, of which 16.2% (n = 518), 13.4% (n = 428), and 9.6% (n = 308) tested positive for respiratory syncytial virus, rhinovirus, and adenovirus, respectively. CONCLUSIONS: The Government of Vietnam has demonstrated that expanding respiratory viral surveillance by strengthening and building upon an influenza platform is feasible, efficient, and practical. This article is protected by copyright. All rights reserved. |
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