{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,5,5]],"date-time":"2026-05-05T06:50:49Z","timestamp":1777963849018,"version":"3.51.4"},"reference-count":32,"publisher":"MDPI AG","issue":"23","license":[{"start":{"date-parts":[[2022,11,30]],"date-time":"2022-11-30T00:00:00Z","timestamp":1669766400000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"name":"Programa Nacional de Coopera\u00e7\u00e3o Acad\u00eamica (PROCAD)\u2014Amaz\u00f4nia 2018\/CAPES","award":["88881.200527\/2018-01"],"award-info":[{"award-number":["88881.200527\/2018-01"]}]},{"name":"Programa Nacional de Coopera\u00e7\u00e3o Acad\u00eamica (PROCAD)\u2014Amaz\u00f4nia 2018\/CAPES","award":["PAPG-2022"],"award-info":[{"award-number":["PAPG-2022"]}]},{"name":"UFPA scientific initiation program (scholarchips) and UFPA qualified production support progtam\u20142022","award":["88881.200527\/2018-01"],"award-info":[{"award-number":["88881.200527\/2018-01"]}]},{"name":"UFPA scientific initiation program (scholarchips) and UFPA qualified production support progtam\u20142022","award":["PAPG-2022"],"award-info":[{"award-number":["PAPG-2022"]}]}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["IJERPH"],"abstract":"<jats:p>Due to social and individual conditions and access to health services, Amazonian riverside populations are highly vulnerable to sexually transmitted infections, including Chlamydia trachomatis. The aim is to estimate the seroprevalence of Chlamydia trachomatis and analyze the associated factors among riverside dwellers in a capital city in the Brazilian Amazon. A cross-sectional study was carried out with residents of the Combu Island, Bel\u00e9m. The study sample was calculated using the population survey technique in the EPI INFO. Only people aged 18 and over were included. ELISA serology was performed to detect antibodies against Chlamydia trachomatis. For data collection, a form containing vulnerability factor questions was applied. Binary regression analysis was performed using the Minitab 20 program. The study sample consisted of 325 participants. The prevalence of IgG\/IgM antibodies against Chlamydia trachomatis was 22.2% and 5.5%, respectively. In the multiple regression, only participants with a broken condom were more likely to have antibodies against the bacteria (OR: 1.90; 95% CI: 1.01; 3.37; p = 0.046). Seroprevalence was associated with condom breakage. This factor demonstrates that despite having an attitude towards condom use, probably, they may have inadequate knowledge about the correct practice of introduction.<\/jats:p>","DOI":"10.3390\/ijerph192315969","type":"journal-article","created":{"date-parts":[[2022,11,30]],"date-time":"2022-11-30T03:49:13Z","timestamp":1669780153000},"page":"15969","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":7,"title":["Seroprevalence of Chlamydia trachomatis and Associated Factors among Vulnerable Riverine in the Brazilian Amazon"],"prefix":"10.3390","volume":"19","author":[{"given":"Jos\u00e9 Jorge da Silva","family":"Galv\u00e3o","sequence":"first","affiliation":[{"name":"Program of Post-Graduation in Nursing, Federal University of Para, Belem 66075-110, Brazil"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Carlos Leonardo Figueiredo","family":"Cunha","sequence":"additional","affiliation":[{"name":"Program of Post-Graduation in Nursing, Federal University of Para, Belem 66075-110, Brazil"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Ellen Christiane Correa","family":"Pinho","sequence":"additional","affiliation":[{"name":"Program of Post-Graduation in Nursing, Federal University of Para, Belem 66075-110, Brazil"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"David de Jesus da Silva","family":"Paiva","sequence":"additional","affiliation":[{"name":"Nursing School, Federal University of Para, Belem 66075-110, Brazil"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"N\u00e1dile Juliane Costa","family":"de Castro","sequence":"additional","affiliation":[{"name":"Program of Post-Graduation in Nursing, Federal University of Para, Belem 66075-110, Brazil"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Val\u00e9ria Gabriele Caldas","family":"Nascimento","sequence":"additional","affiliation":[{"name":"Program of Post-Graduation in Nursing, Federal University of Para, Belem 66075-110, Brazil"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-6125-3261","authenticated-orcid":false,"given":"Wanderson Santiago","family":"de Azevedo Junior","sequence":"additional","affiliation":[{"name":"Program of Post-Graduation in Nursing, Federal University of Para, Belem 66075-110, Brazil"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Richardson Augusto Rosendo","family":"da Silva","sequence":"additional","affiliation":[{"name":"Program of Post-Graduation in Collective Health, Federal University of Rio Grande do Norte, Natal 59078-970, Brazil"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-2044-9350","authenticated-orcid":false,"given":"Rosimar Neris Martins","family":"Feitosa","sequence":"additional","affiliation":[{"name":"Program of Post-Graduation in Biology of Infectious Agents, Federal University of Para, Belem 66075-110, Brazil"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-1135-6507","authenticated-orcid":false,"given":"Antonio Carlos Ros\u00e1rio","family":"Vallinoto","sequence":"additional","affiliation":[{"name":"Program of Post-Graduation in Biology of Infectious Agents, Federal University of Para, Belem 66075-110, Brazil"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Eli\u00e3 Pinheiro","family":"Botelho","sequence":"additional","affiliation":[{"name":"Program of Post-Graduation in Nursing, Federal University of Para, Belem 66075-110, Brazil"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-8206-4950","authenticated-orcid":false,"given":"Glenda Roberta Oliveira Naiff","family":"Ferreira","sequence":"additional","affiliation":[{"name":"Program of Post-Graduation in Nursing, Federal University of Para, Belem 66075-110, Brazil"}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"1968","published-online":{"date-parts":[[2022,11,30]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","first-page":"242","DOI":"10.1186\/s12978-021-01296-4","article-title":"Refocusing on sexually transmitted infections (STIs) to improve reproductive health: A call to further action","volume":"18","author":"Otu","year":"2021","journal-title":"Reprod. 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