{"doi":"10.1016/j.ijregi.2022.01.013","title":"Seroprevalence of SARS-CoV-2 antibodies in Bangladesh related to novel coronavirus infection","abstract":"ABSTRACT Design A cross-sectional study was conducted amongst household members in 32 districts of Bangladesh to build knowledge about disease epidemiology and seroepidemiology of coronavirus disease 2019 (COVID-19). Objective Antibody responses to severe acute respiratory syndrome coronavirus-2 (SARS-CoV-2) were assessed in people between April and October 2020. Results The national seroprevalence rates of immunoglobulin G (IgG) and IgM were estimated to be 30.4% and 39.7%, respectively. In Dhaka, the seroprevalence of IgG was 35.4% in non-slum areas and 63.5% in slum areas. In areas outside of Dhaka, the seroprevalence of IgG was 37.5% in urban areas and 28.7% in rural areas. Between April and October 2020, the highest seroprevalence rate (57% for IgG and 64% for IgM) was observed in August. IgM antibody was more prevalent in younger participants, while older participants had more frequent IgG seropositivity. Follow-up specimens from patients with COVID-19 and their household members suggested that both IgG and IgM seropositivity increased significantly at day 14 and day 28 compared with day 1 after enrolment. Conclusions : SARS-CoV-2 had spread extensively in Bangladesh by October 2020. This highlights the importance of monitoring seroprevalence data, particularly with the emergence of new SARS-CoV-2 variants over time.","journal":"IJID Regions","year":2022,"id":268674,"datarank":0.779965500688665,"base_score":3.091042453358316,"endowment":3.091042453358316,"self_citation_contribution":0.4636563680037475,"citation_network_contribution":0.3163091326849175,"self_endowment_contribution":0.4636563680037475,"citer_contribution":0.3163091326849175,"corpus_percentile":null,"corpus_rank":null,"citation_count":21,"citer_count":11,"citers_with_citation_signal":8,"citers_with_endowment":8,"datacite_reuse_total":0,"is_dataset":false,"is_dataset_confidence":0.9389,"is_data_producer":false,"deposit_databanks":null,"is_oa":true,"file_count":0,"downloads":0,"has_version_chain":false,"published_date":"2022-01-01","fair_score":null,"fair_percentile":null,"algorithm_id":"datarank_citation_only_1hop_v6","ranking_scope":"data_only","authors":[{"id":576810,"name":"Marjahan Akhtar","orcid":"0000-0001-8316-9191","position":1,"is_corresponding":false},{"id":584633,"name":"Aklima Akter","orcid":"0000-0003-1854-4463","position":2,"is_corresponding":false},{"id":354554,"name":"Fatema Khaton","orcid":null,"position":3,"is_corresponding":false},{"id":930864,"name":"Sadia Rahman","orcid":"0000-0002-7983-087X","position":4,"is_corresponding":false},{"id":352717,"name":"Jannatul Ferdous","orcid":"0000-0003-2390-9404","position":5,"is_corresponding":false},{"id":930865,"name":"Arifa Nazneen","orcid":"0000-0002-9699-0947","position":6,"is_corresponding":false},{"id":930866,"name":"Shariful Amin Sumon","orcid":"0000-0001-5770-1527","position":7,"is_corresponding":false},{"id":931469,"name":"Kajal Chandra Banik","orcid":null,"position":8,"is_corresponding":false},{"id":930867,"name":"Arifur Rahman Bablu","orcid":"0000-0001-8401-9670","position":9,"is_corresponding":false},{"id":930868,"name":"A. S. M. Alamgir","orcid":"0000-0002-1240-6089","position":10,"is_corresponding":false},{"id":898624,"name":"Mahbubur Rahman","orcid":"0000-0001-8577-8281","position":11,"is_corresponding":false},{"id":930869,"name":"S. Tony","orcid":"0000-0002-1601-0727","position":12,"is_corresponding":false},{"id":930870,"name":"Khaled Hossain","orcid":"0000-0003-0878-915X","position":13,"is_corresponding":false},{"id":109065,"name":"Stephen B. Calderwood","orcid":"0000-0002-2083-7153","position":14,"is_corresponding":false},{"id":108258,"name":"Richelle C. Charles","orcid":"0000-0002-8881-1849","position":15,"is_corresponding":false},{"id":108468,"name":"Edward T. Ryan","orcid":"0009-0005-0169-394X","position":16,"is_corresponding":false},{"id":62201,"name":"Regina C. LaRocque","orcid":"0000-0003-4558-0339","position":17,"is_corresponding":false},{"id":109068,"name":"Jason B. 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