{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,5,16]],"date-time":"2026-05-16T10:19:47Z","timestamp":1778926787209,"version":"3.51.4"},"reference-count":30,"publisher":"MDPI AG","issue":"10","license":[{"start":{"date-parts":[[2022,10,14]],"date-time":"2022-10-14T00:00:00Z","timestamp":1665705600000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"name":"Coordena\u00e7\u00e3 de Aperfei\u00e7oamento de Pessoal de N\u00edvel Superior (CAPES)","award":["001"],"award-info":[{"award-number":["001"]}]},{"name":"Coordena\u00e7\u00e3 de Aperfei\u00e7oamento de Pessoal de N\u00edvel Superior (CAPES)","award":["#314209\/2021-2"],"award-info":[{"award-number":["#314209\/2021-2"]}]},{"name":"Ministry of Education-Brazil","award":["001"],"award-info":[{"award-number":["001"]}]},{"name":"Ministry of Education-Brazil","award":["#314209\/2021-2"],"award-info":[{"award-number":["#314209\/2021-2"]}]},{"name":"CNPq Grantee","award":["001"],"award-info":[{"award-number":["001"]}]},{"name":"CNPq Grantee","award":["#314209\/2021-2"],"award-info":[{"award-number":["#314209\/2021-2"]}]}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Vaccines"],"abstract":"<jats:p>Chlamydia trachomatis is one of the most prevalent sexually transmitted bacteria worldwide and may increase the risk of other sexually transmitted infections (STIs) including the human immunodeficiency virus (HIV). This study describes the seroprevalence of C. trachomatis infection among antiretroviral-na\u00efve patients who are newly diagnosed with HIV in the city of Bel\u00e9m, Par\u00e1, in the Amazon region of Brazil. A cross-sectional study was carried out between January 2018 and January 2019 in 141 people living with HIV\/AIDS (PLHA) who were followed up in a specialized unit of the public health network of Par\u00e1. The investigation of IgG antibodies against C. trachomatis was performed by enzyme immunoassay. Sociodemographic and sexual behavior information were obtained through a questionnaire. The prevalence of IgG anti-C. trachomatis antibodies was 64.8% (92\/141). The majority of individuals were young, heterosexual, single men who did not use condoms during sexual intercourse and had no history of STIs. No significant differences were found when comparing any clinical or demographic data between groups. Our results demonstrated a high rate of exposure to C. trachomatis in newly diagnosed HIV-infected individuals in the Amazon region of Brazil, and all PLHA should be screened for C. trachomatis to decrease transmission of the bacteria and prevent the clinical manifestations of chronic infection.<\/jats:p>","DOI":"10.3390\/vaccines10101719","type":"journal-article","created":{"date-parts":[[2022,10,17]],"date-time":"2022-10-17T05:08:02Z","timestamp":1665983282000},"page":"1719","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":4,"title":["Exposure to Chlamydia trachomatis Infection in Individuals Who Are Newly Diagnosed with HIV and Antiretroviral-Na\u00efve from Bel\u00e9m, Northern Brazil"],"prefix":"10.3390","volume":"10","author":[{"given":"Simone da Silva","family":"G\u00f3es","sequence":"first","affiliation":[{"name":"Biology of Infectious and Parasitic Agents Post-Graduate Program, Federal University of Par\u00e1, Bel\u00e9m 66075-110, PA, Brazil"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-0312-0553","authenticated-orcid":false,"given":"Ricardo Roberto de Souza","family":"Fonseca","sequence":"additional","affiliation":[{"name":"Biology of Infectious and Parasitic Agents Post-Graduate Program, Federal University of Par\u00e1, Bel\u00e9m 66075-110, PA, Brazil"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Maria Eduarda de Sousa","family":"Avelino","sequence":"additional","affiliation":[{"name":"Biology of Infectious and Parasitic Agents Post-Graduate Program, Federal University of Par\u00e1, Bel\u00e9m 66075-110, PA, Brazil"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Sandra Souza","family":"Lima","sequence":"additional","affiliation":[{"name":"Virology Laboratory, Institute of Biological Sciences, Federal University of Par\u00e1, Bel\u00e9m 66075-110, PA, Brazil"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Misma Suely Gon\u00e7alves Ara\u00fajo de","family":"Lima","sequence":"additional","affiliation":[{"name":"Virology Laboratory, Institute of Biological Sciences, Federal University of Par\u00e1, Bel\u00e9m 66075-110, PA, Brazil"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-6986-1309","authenticated-orcid":false,"given":"Rog\u00e9rio Valois","family":"Laurentino","sequence":"additional","affiliation":[{"name":"Virology Laboratory, Institute of Biological Sciences, Federal University of Par\u00e1, Bel\u00e9m 66075-110, PA, Brazil"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-2014-2770","authenticated-orcid":false,"given":"Maria Alice Freitas","family":"Queiroz","sequence":"additional","affiliation":[{"name":"Biology of Infectious and Parasitic Agents Post-Graduate Program, Federal University of Par\u00e1, Bel\u00e9m 66075-110, PA, Brazil"},{"name":"Virology Laboratory, Institute of Biological Sciences, Federal University of Par\u00e1, Bel\u00e9m 66075-110, PA, Brazil"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Felipe Bonfim","family":"Freitas","sequence":"additional","affiliation":[{"name":"Evandro Chagas Institute, Health Ministry of Brazil, Ananindeua 67030-000, PA, 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":"Biology of Infectious and Parasitic Agents Post-Graduate Program, Federal University of Par\u00e1, Bel\u00e9m 66075-110, PA, Brazil"},{"name":"Virology Laboratory, Institute of Biological Sciences, Federal University of Par\u00e1, Bel\u00e9m 66075-110, PA, Brazil"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Ricardo","family":"Ishak","sequence":"additional","affiliation":[{"name":"Biology of Infectious and Parasitic Agents Post-Graduate Program, Federal University of Par\u00e1, Bel\u00e9m 66075-110, PA, Brazil"},{"name":"Virology Laboratory, Institute of Biological Sciences, Federal University of Par\u00e1, Bel\u00e9m 66075-110, PA, Brazil"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-4571-4715","authenticated-orcid":false,"given":"Luiz Fernando Almeida","family":"Machado","sequence":"additional","affiliation":[{"name":"Biology of Infectious and Parasitic Agents Post-Graduate Program, Federal University of Par\u00e1, Bel\u00e9m 66075-110, PA, Brazil"},{"name":"Virology Laboratory, Institute of Biological Sciences, Federal University of Par\u00e1, Bel\u00e9m 66075-110, PA, Brazil"}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"1968","published-online":{"date-parts":[[2022,10,14]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","first-page":"252","DOI":"10.1080\/09540121.2011.597706","article-title":"Prevalence and risk factors associated with syphilis in a cohort of HIV positive individuals in Brazil","volume":"24","author":"Adolf","year":"2012","journal-title":"AIDS Care"},{"key":"ref_2","unstructured":"Centers for Disease Control and Prevention (CDCP) (2022, January 10). 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Dis."}],"container-title":["Vaccines"],"original-title":[],"language":"en","link":[{"URL":"https:\/\/www.mdpi.com\/2076-393X\/10\/10\/1719\/pdf","content-type":"unspecified","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2025,10,11]],"date-time":"2025-10-11T00:54:26Z","timestamp":1760144066000},"score":1,"resource":{"primary":{"URL":"https:\/\/www.mdpi.com\/2076-393X\/10\/10\/1719"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[2022,10,14]]},"references-count":30,"journal-issue":{"issue":"10","published-online":{"date-parts":[[2022,10]]}},"alternative-id":["vaccines10101719"],"URL":"https:\/\/doi.org\/10.3390\/vaccines10101719","relation":{},"ISSN":["2076-393X"],"issn-type":[{"value":"2076-393X","type":"electronic"}],"subject":[],"published":{"date-parts":[[2022,10,14]]}}}