المؤلفون: Catherine Ley, Heying Duan, Julie Parsonnet

المصدر: BMC Medical Research Methodology, Vol 23, Iss 1, Pp 1-7 (2023)

مصطلحات موضوعية: Recruitment, Postal mailing, Seroprevalence survey, Representative sample, Probability sampling, Medicine (General), R5-920

الوصف: Abstract Background In a potential epidemic of an emerging infection, representative population-based serologic studies are required to determine the extent of immunity to the infectious agent, either from natural infection or vaccination. Recruitment strategies need to optimize response rates. Methods Within a seroepidemiologic study to determine the true burden of SARS-CoV2 infection in two Bay Area counties, we evaluated whether letter (L) or postcard (P) invitations with reminders were more effective at recruiting participant households. Using geographic, probability-based sampling, 9,999 representative addresses, split between Santa Clara and Solano counties, were randomized to receive an initial invitation (L or P); a randomized reminder mailing sent two weeks later to all non-respondents created four mailing type groups (L/L, L/P, P/L, P/P). Interested households provided contact information via survey to perform blood spot collection at home for testing and then receive SARS-CoV2 serology results. Comparison of demographics among respondents and non-respondents used census tract data. Results Receiving any reminder mailing increased household response rates from 4.2% to between 8–13% depending on mailing combination. Response rates from two letters were 71% higher than from two postcards (13.2% vs. 7.7%, OR = 1.83 [95% CI: 1.5–2.2]). Respondents were older, more educated and more likely white than non-respondents. Compared to Solano county, Santa Clara county had different demographics and increased household response rates (L/L: 15.7% vs 10.7%; P/P: 9.2% vs. 6.1%; p

وصف الملف: electronic resource

العلاقة: https://doaj.org/toc/1471-2288Test

الوصول الحر: https://doaj.org/article/175e9ef80a044c44996944cc489deb54Test

المؤلفون: Shinsuke Miyano, Emilia Vynnycky, Chansay Pattamavone, Yasunori Ichimura, Yoshio Mori, Phonethipsavanh Nouanthong, Kongxay Phounphenghack, Chankham Tengbriacheu, Bouaphne Khamphaphongphane, Lauren Franzel, Tae Un Yang, Hendrikus Raaijimarkers, Kenichi Komada, Tomomi Ota, Masafumi Funato, Makoto Takeda, Masahiko Hachiya

المصدر: International Journal of Infectious Diseases, Vol 129, Iss , Pp 70-77 (2023)

مصطلحات موضوعية: Population-based, Seroprevalence survey, Mathematical modeling, Measles, Rubella, Elimination, Infectious and parasitic diseases, RC109-216

الوصف: Objectives: We evaluated the effectiveness of the Lao People's Democratic Republic's measles-rubella immunization program using the seroprevalence from two cross-sectional surveys. Methods: The nationwide surveys occurred in 2014 and 2019 using a multistage cluster sampling, both requiring samples from 2184 individuals from 52 randomly selected villages. Immunoglobulin G titers, measured using enzyme-linked immunosorbent assay, were considered positive at ≥120 mIU/ml (measles) and ≥10 IU/ml (rubella). We calculated the vaccination-related reduction in the force of rubella infection and the number of congenital rubella syndrome cases averted in 2019. Results: We collected 2135 (women: 55.2%, mean age: 23.2 years) and 2001 (52.7%, 23.1 years) samples in 2014 and 2019, respectively. During 2014-2019, immunoglobulin G prevalence increased from 83.9% (95% confidence interval [CI]: 83.8-84.0) to 98.3% (97.7-98.8) for measles and from 75.4% (75.3-75.5) to 87.8% (86.4-89.2) for rubella. The most plausible reduction in the average force of rubella infection was 100% (95% CI: 28-100) since vaccination started, averting 78 (95% CI: 42-128) congenital rubella syndrome cases in 2019. Conclusion: This is the first population-based study for measles and rubella at two different time points in developing countries. Measles and rubella seroprevalence increased significantly during 2014-2019, greatly exceeding the immunity thresholds for their elimination.

وصف الملف: electronic resource

العلاقة: http://www.sciencedirect.com/science/article/pii/S1201971223000450Test; https://doaj.org/toc/1201-9712Test

الوصول الحر: https://doaj.org/article/2257a34d486041bcac85e6f42bcfb9e6Test

المؤلفون: Sumiyo Okawa, Kenichi Komada, Yasunori Ichimura, Masaya Sugiyama, Hung Thai Do, Huy Xuan Le, Thanh Tien Hoang, Trieu Bao Nguyen, Mai Kim Huynh, Hang Thi Hai Hoang, Nhu Anh Thi Tran, Thieu Hoang Le, Quyet Thi Ngo, Shinsuke Miyano, Yuta Yokobori, Yosuke Inoue, Tetsuya Mizoue, Masahiko Hachiya

المصدر: International Journal of Infectious Diseases, Vol 125, Iss , Pp 51-57 (2022)

مصطلحات موضوعية: Hepatitis B, Seroprevalence survey, Cost comparison, Rapid diagnostic tests, Dried blood spots, Vietnam, Infectious and parasitic diseases, RC109-216

الوصف: Objectives: This study aimed to determine the agreement between a rapid diagnostic test (RDT) and a dried blood spot (DBS)-based electrochemiluminescence immunoassay (ECLIA) of hepatitis B surface antigen and to compare the costs of conducting serosurveys using RDTs and DBS in a field setting. Methods: A serosurvey was conducted in the South Central Coast region of Vietnam in May 2019. Participants aged 1-39 years were recruited using a four-stage random sampling method and tested for hepatitis B surface antigen using an RDT kit (Alere Determine) and a DBS-based ECLIA. The agreement between the RDT and the DBS-based ECLIA was assessed using cross-tabulation and Cohen kappa. Cost data were categorized by input (personnel, transportation, field consumables, laboratory consumables, and capital item/overhead) and survey phase (survey preparation, data/biospecimen collection, laboratory testing, and coordination). Results: A total of 2072 participants were analyzed. There was a 99% agreement between the RDT and the DBS-based ECLIA results, with a Cohen kappa of 0.9. The estimated cost of conducting a serosurvey by DBS was UD $75,291, whereas RDT was $53,182. Conclusion: RDTs and DBS-based ECLIA provide test results with high agreements. RDTs are a better option in terms of cost, whereas the DBS-based ECLIA may be useful when evaluating multiple infectious diseases.

وصف الملف: electronic resource

العلاقة: http://www.sciencedirect.com/science/article/pii/S1201971222005495Test; https://doaj.org/toc/1201-9712Test

الوصول الحر: https://doaj.org/article/fce93208518a4f16aaa035ac45de859aTest

المؤلفون: Anna Vicco, Clare P. McCormack, Belen Pedrique, John H. Amuasi, Anthony Afum-Adjei Awuah, Christian Obirikorang, Nicole S. Struck, Eva Lorenz, Jürgen May, Isabela Ribeiro, Gathsaurie Neelika Malavige, Christl A. Donnelly, Ilaria Dorigatti

مصطلحات موضوعية: Genetics, Biotechnology, Cancer, Infectious Diseases, Computational Biology, Environmental Sciences not elsewhere classified, Biological Sciences not elsewhere classified, Mathematical Sciences not elsewhere classified, novel methodological approach, determine sample sizes, dependent immunity profile, capita annual risk, dengue seroprevalence survey, inform serosurvey design, dengue virus, %22">xlink ">, testing strategies, serosurveys provide, previous surveys, previous cross, largely unknown, inform seroden, ideal data, ghana among, fundamental measure, foi ), different diseases, convenient strategy, circulating globally, average per

الوصف: Includes Figs A-H, Tables A-I and additional details on the Two-steps sampling approach.

العلاقة: https://figshare.com/articles/journal_contribution/Includes_Figs_A-H_Tables_A-I_and_additional_details_on_the_Two-steps_sampling_approach_/24644461Test

الإتاحة: https://doi.org/10.1371/journal.pcbi.1011666.s001Test
https://figshare.com/articles/journal_contribution/Includes_Figs_A-H_Tables_A-I_and_additional_details_on_the_Two-steps_sampling_approach_/24644461Test

المؤلفون: Kenichi Komada, Yasunori Ichimura, Mami Shimada, Masafumi Funato, Hung Thai Do, Huy Xuan LE, Thanh Tien Hoang, Trieu Bao Nguyen, Mai Kim Huynh, Hang Thi Hai Hoang, Nhu Anh Thi Tran, Thieu Hoang LE, Quyet Thi Ngo, Shinsuke Miyano, Masaya Sugiyama, Tetsuya Mizoue, Masahiko Hachiya

المصدر: Journal of Virus Eradication, Vol 8, Iss 4, Pp 100309- (2022)

مصطلحات موضوعية: Hepatitis B surface Antigen, Seroprevalence survey, Cluster sampling, Immunization, Vietnam, Microbiology, QR1-502, Public aspects of medicine, RA1-1270

الوصف: Background: Vietnam introduced a 3-dose hepatitis B (HBV) immunization program comprising 1 dose immediately after birth and 2 or 3 in infancy in the past 20 years, but the impact of the vaccine has not been systematically evaluated. Thus, we conducted this survey aiming to estimate the age-specific chronic HBV prevalence in the general population and to evaluate HBV immunization effectiveness. Methods: Population-based, four-stage cluster sampling was used in the South Central Coast region of Vietnam. The point-of-care Determine rapid test was used to assess hepatitis B surface antigen (HBsAg) positivity. Results: A total of 2,075 samples were included in the study. HBsAg prevalence was significantly higher among adults aged 20–39 years than in the population aged 1–19 years (8.0% [95% confidence interval 5.0–12.0] vs. 2.0% [95% confidence interval 1.0–6.0], p

وصف الملف: electronic resource

العلاقة: http://www.sciencedirect.com/science/article/pii/S2055664022002473Test; https://doaj.org/toc/2055-6640Test

الوصول الحر: https://doaj.org/article/38634b549e6f418babad3128fe7fe576Test

المؤلفون: Marie Claire Endegue, Carolyn Sein, Rocio Lopez Cavestany, Visalakshi Jeyaseelan, Tess Palmer, Gnakub Norbert Soke, Aissata Diaha, Basit Jafri, Bernardo A. Mainou, Harish Verma, Ondrej Mach

المصدر: Vaccine: X, Vol 12, Iss , Pp 100244- (2022)

مصطلحات موضوعية: Poliomyelitis, Seroprevalence survey, Oral poliovirus vaccine, Vaccination campaigns, Routine immunization, Far North Region Cameroon, Immunologic diseases. Allergy, RC581-607

الوصف: Background: This study assessed seroprevalence of poliovirus antibodies in children from selected poliovirus high-risk areas of the Far North region of Cameroon which serves to monitor polio immunization program. Methods: This was a community-based cross-sectional seroprevalence survey involving collection of dried blood specimens (DBS) among children aged 12–59 months (n = 401). Multi-stage cluster sampling using GIS was applied to select the study sample. Collected DBS were analysed with microneutralization assays for poliovirus neutralizing antibody levels. Results: The overall seroprevalence of types 1, 2 and 3 neutralizing antibodies were 86.8 % (95 % confidence interval [CI]: 83.1–89.8), 74.6 % (95 % CI: 70.1–78.6) and 79.3 % (95 % CI: 75.1–83.0), respectively. Median titers (log2 scale) for type 1, 2 and 3 were 7.17 (6.5–7.5), 5.17 (4.83–5.5), and 6.17 (5.5–6.5), respectively. There was an increasing trend in median titers and seroprevalence with age, statistically significant between the youngest and oldest age groups (p

وصف الملف: electronic resource

العلاقة: http://www.sciencedirect.com/science/article/pii/S2590136222001048Test; https://doaj.org/toc/2590-1362Test

الوصول الحر: https://doaj.org/article/34c061aa25da46c089752309cba3438aTest

المؤلفون: Theerut Densathaporn, Rassamee Sangthong, Monvaris Sakolnapa, Smonrapat Surasombatpattana, Marisa Kemapunmanus, Promsin Masrinoul, Sutee Yoksan, Edward B. McNeil, Virasakdi Chongsuvivatwong

المصدر: BMC Infectious Diseases, Vol 20, Iss 1, Pp 1-8 (2020)

مصطلحات موضوعية: Zika virus, Seroprevalence survey, Cross-protection, Infectious and parasitic diseases, RC109-216

الوصف: Abstract Background In 2016 and 2017, Zika virus (ZIKV) infection outbreaks occurred in two communities in southern Thailand. This re-immerging infection can widely spread by mosquito bites and cause serious complications in a central nervous system among children born to infected mothers. Thus, they should be protected. This study aims to (1) To determine the prevalence of neutralizing ZIKV antibodies in the post-outbreak areas among the general population and pregnancy women residing at various distances from the houses of the nearest index patients; (2) To examine the cross-neutralizing capacity of antibodies against ZIKV on other flaviviruses commonly found in the study areas; (3) To identify factors associated with the presence of neutralizing ZIKV antibodies. Methods The two post-outbreak communities were visited at 18 months after the outbreaks. We enrolled (1) 18 confirmed ZIKV infected (index) cases, (2) sample of 554 neighbors in the outbreak areas who lived at various distances from the index patients’ houses, (3) 190 residents of non-outbreak areas, and (4) all pregnant women regardless of gestational age residing in the study areas (n = 805). All serum specimens underwent the plaque reduction neutralization test (PRNT). Ten randomly selected ZIKV seropositive and ten randomly selected seronegative specimens were tested for dengue virus serotypes 1–4 (DENV1–4) and Japanese encephalitis virus (JEV) antibodies using PRNT90. Serum titer above 1:10 was considered positive. Multiple logistic regression was used to assess factors associated with seropositivity. Results Out of all 18 index cases, 9 remained seropositive. The seroprevalence (95% CI) in the two outbreak areas were 43.7% (35.9–51.6%) and 29.7% (23.3–36.0%) in general population, and 24.3% (20.1–28.8%) and 12.8% (9.7–16.5%) in pregnant women. Multivariate analysis showed that seropositivity was independent of the distance gradient from the index’s houses. However, being elderly was associated with seropositivity. DENV1–4 and JEV neutralizing antibodies were present in most ZIKV-positive and negative subsamples. Conclusion Protective herd immunity for ZIKV infection is inadequate, especially among pregnant women in the two post-outbreak areas in southern Thailand.

وصف الملف: electronic resource

العلاقة: https://doaj.org/toc/1471-2334Test

الوصول الحر: https://doaj.org/article/5ec16ef08da44d1a91bd942cb9f32d1bTest

المؤلفون: Garlantezec, R, Tadié, E, Heslan, C, Gary-Bobo, P, Oumari, S, Saade, A, Sitruk, A, Tattevin, P, Thibault, V., Paris, C

المساهمون: Institut de recherche en santé, environnement et travail (Irset), Université d'Angers (UA)-Université de Rennes (UR)-École des Hautes Études en Santé Publique EHESP (EHESP)-Institut National de la Santé et de la Recherche Médicale (INSERM)-Structure Fédérative de Recherche en Biologie et Santé de Rennes ( Biosit : Biologie - Santé - Innovation Technologique ), Centre Hospitalier Universitaire de Rennes CHU Rennes = Rennes University Hospital Ponchaillou, ARN régulateurs bactériens et médecine (BRM), Université de Rennes (UR)-Institut National de la Santé et de la Recherche Médicale (INSERM)-Structure Fédérative de Recherche en Biologie et Santé de Rennes ( Biosit : Biologie - Santé - Innovation Technologique ), This study was funded by a grant from the Nominoe Fund and the Rennes CHU.

المصدر: ISSN: 2666-9919 ; Infectious Diseases Now ; https://hal.science/hal-03789879Test ; Infectious Diseases Now, 2022, 52 (8), pp.447-452. ⟨10.1016/j.idnow.2022.09.004⟩.

مصطلحات موضوعية: SARS-CoV-2, health care workers, occupational exposure, seroprevalence survey, [SDV]Life Sciences [q-bio], [SDV.MHEP.MI]Life Sciences [q-bio]/Human health and pathology/Infectious diseases

الوصف: International audience ; OBJECTIVES: To estimate the SARS-CoV-2 IgG seroprevalence rate in healthcare workers (HCWs) from Western France after the first 2020 wave, its determinants and the kinetics of total SARS-CoV-2 antibodies. PATIENTS AND METHODS: Overall, 9,453 HCWs responded to a self-questionnaire and underwent a lateral flow immunoassay to assess SARS-CoV-2 IgG presence. For 72 HCWs who tested positive, total anti-nucleocapsid antibodies were assessed at day 0, 30, and 90. RESULTS: SARS-CoV-2 IgG seroprevalence rate was 1.06% [0.86%-1.27%]. Factors associated with IgG presence were gender, performing upper respiratory tract samples, contact with HCWs or household members diagnosed with COVID-19. Total antibodies decreased between day 0 and day 90, with anosmia or ageusia, and were higher in HCWs older than 50 years. CONCLUSION: We reported a low prevalence rate of IgG and identified several risk factors associated with its presence and persistence of total antibodies. Additional studies are needed to confirm these observations.

العلاقة: info:eu-repo/semantics/altIdentifier/pmid/36108975; hal-03789879; https://hal.science/hal-03789879Test; https://hal.science/hal-03789879/documentTest; https://hal.science/hal-03789879/file/Garlantezec%20et%20al.%20-%202022%20-%20SARS-CoV-2%20seroprevalence%20and%20antibodies%20persisten.pdfTest; PUBMED: 36108975

الإتاحة: https://doi.org/10.1016/j.idnow.2022.09.004Test
https://hal.science/hal-03789879Test
https://hal.science/hal-03789879/documentTest
https://hal.science/hal-03789879/file/Garlantezec%20et%20al.%20-%202022%20-%20SARS-CoV-2%20seroprevalence%20and%20antibodies%20persisten.pdfTest

المؤلفون: Shinsuke Miyano (531944), Chansay Pathammavong (528718), Yasunori Ichimura (431621), Masaya Sugiyama (135004), Kongxay Phounphenghack (14311609), Chankham Tengbriacheu (14311612), Bouaphane Khamphaphongphane (14311615), Phonethipsavanh Nouanthong (723304), Lauren Franzel (14311618), Tae Un Yang (14311621), Hendrikus Raaijimakers (14311624), Tomomi Ota (12380775), Masafumi Funato (10047252), Kenichi Komada (528716), Masahiko Hachiya (528725)

مصطلحات موضوعية: Medicine, Biotechnology, Science Policy, Infectious Diseases, Environmental Sciences not elsewhere classified, Biological Sciences not elsewhere classified, Chemical Sciences not elsewhere classified, target also need, statistically significant differences, relevant responses tailored, june 2019 using, collected onto whatman, chemiluminescent microparticle immunoassay, 903 filter paper, lao people ’, adjusted odds ratio, 9 %, 6 – 15, 1 – 16, 7 – 10, perform subgroup analysis, multivariable analysis revealed, hepatitis c antibody, chronic hepatitis b, tm , nationwide seroprevalence survey, lao pdr according, first national population, div >< p

الوقت: 95

الوصف: Additional information regarding the ethical, cultural, and scientific considerations specific to inclusivity in global research. (DOCX)

العلاقة: https://figshare.com/articles/journal_contribution/Inclusivity_in_global_research_/21795346Test

الإتاحة: https://doi.org/10.1371/journal.pone.0278933.s002Test

المؤلفون: Pimpika Hanvatananukul, Chanidapa Prasarakee, Saowalak Sarachai, Linda Aurpibul, Kamolrawee Sintupat, Ratchaneekorn Khampan, Jutamad Saheng, Tavitiya Sudjaritruk

المصدر: International Journal of Infectious Diseases, Vol 96, Iss , Pp 422-430 (2020)

مصطلحات موضوعية: Diphtheria, Healthy youth, Pertussis, Seroprevalence survey, Tetanus, Thailand, Infectious and parasitic diseases, RC109-216

الوصف: Objective: To determine the seroprevalence of antibodies against of diphtheria, tetanus, and pertussis among Thai adolescents. Methods: A cross-sectional study was conducted among Thai adolescents aged 11–20 years who had completed five doses of diphtheria, tetanus, and pertussis (DTP)-containing vaccine during childhood, either diphtheria toxoid, tetanus toxoid, whole-cell pertussis (DTwP) or diphtheria toxoid, tetanus toxoid, acellular pertussis (DTaP) vaccine. Protective antibodies against diphtheria, tetanus, and pertussis were defined as anti-diphtheria toxoid IgG ≥0.1 IU/ml, anti-tetanus toxoid IgG ≥0.1 IU/ml, and anti-Bordetella pertussis toxin IgG ≥5 IU/ml, respectively. Results: Of 220 adolescents (median age 16 years), 45% had received a tetanus toxoid, reduced diphtheria toxoid (Td) booster vaccine during adolescence, and none (0%) had received a tetanus toxoid, reduced diphtheria toxoid, acellular pertussis (Tdap) booster vaccine. Overall, 50%, 99%, and 57% of adolescents demonstrated protective antibodies against diphtheria, tetanus, and pertussis, respectively. The geometric mean concentrations (GMCs) of antibodies against diphtheria (p = 0.06) and tetanus (p < 0.001) were higher among adolescents who had received Td vaccine. Nevertheless, the antibody levels against both diseases waned over time, regardless of Td booster vaccination. Likewise, pertussis antibody levels gradually declined after the fifth childhood dose of DTwP/DTaP vaccine. Conclusions: Approximately half of these healthy Thai adolescents had not maintained protective antibodies against diphtheria and pertussis. A booster vaccination with diphtheria toxoid and/or acellular pertussis-containing vaccines is a crucial strategy to prevent such diseases in this population.

وصف الملف: electronic resource

العلاقة: http://www.sciencedirect.com/science/article/pii/S1201971220303040Test; https://doaj.org/toc/1201-9712Test

الوصول الحر: https://doaj.org/article/9ed1b3e855aa4f64bb5437c10495b8c6Test