{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,10,6]],"date-time":"2026-10-06T00:23:38Z","timestamp":1791246218946,"version":"4.1.0"},"reference-count":45,"publisher":"Public Library of Science (PLoS)","issue":"6","license":[{"start":{"date-parts":[[2023,6,23]],"date-time":"2023-06-23T00:00:00Z","timestamp":1687478400000},"content-version":"vor","delay-in-days":0,"URL":"http:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"name":"Secretaria de Estado de Sa\u00fade de Rond\u00f4nia"},{"name":"Laborat\u00f3rio Central de Sa\u00fade P\u00fablica de Rond\u00f4nia"}],"content-domain":{"domain":["www.plosone.org"],"crossmark-restriction":false},"short-container-title":["PLoS ONE"],"abstract":"<jats:p>Sexually transmitted infections (STIs) are among the most common public health problems worldwide, especially among adolescents and young adults, who account for almost 50% of all STI patients. Studies on the subject in the western Amazon are limited. This study aimed to evaluate the prevalence of STIs (chlamydia, gonorrhea, trichomoniasis, herpes simplex virus, syphilis, human immunodeficiency virus [HIV], hepatitis B, and hepatitis C) in adolescents treated at a family planning outpatient clinic in the western Amazon: Porto Velho, Rond\u00f4nia, Brazil. A total of 196 adolescents were enrolled. During the gynecological examination, endocervical samples were collected to test for four STIs (chlamydia, gonorrhea, trichomoniasis, and herpes simplex virus), and blood samples were collected for the detection of HIV, syphilis, and hepatitis B and C. The mean age was 17.3 \u00b1 1.5 years, the age at sexarche was 14.4 \u00b1 1.6 years, and 54.6% of participants had their first sexual intercourse at 14 years or younger. Only 1.0% of the adolescents used condoms in all sexual relations, and 19.9% had casual partner(s) in the last year. In the evaluation of prevalence, we found that 32% of the adolescents had at least one STI, with the most prevalent being chlamydia (23%), followed by trichomoniasis (5.6%), herpes simplex (4.6%), and gonorrhea (3.1%). No positive cases of hepatitis B, hepatitis C, or HIV were detected, but 1% of the adolescents tested positive for syphilis. These indicators will support more effective health care strategies aimed at improving the quality of life of populations in this region of the western Amazon. In conclusion, our findings demonstrated high rates of STIs in the studied patients, reinforcing the need to expand epidemiological studies to implement more appropriate public policies and intervention strategies to prevent STIs in adolescents and other vulnerable populations in the western Amazon.<\/jats:p>","DOI":"10.1371\/journal.pone.0287633","type":"journal-article","created":{"date-parts":[[2023,6,24]],"date-time":"2023-06-24T23:17:42Z","timestamp":1687648662000},"page":"e0287633","update-policy":"https:\/\/doi.org\/10.1371\/journal.pone.corrections_policy","source":"Crossref","is-referenced-by-count":12,"title":["Prevalence of sexually transmissible infections in adolescents treated in a family planning outpatient clinic for adolescents in the western Amazon"],"prefix":"10.1371","volume":"18","author":[{"given":"Ida Per\u00e9a","family":"Monteiro","sequence":"first","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Camila Fl\u00e1via Gomes","family":"Azzi","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-4755-170X","authenticated-orcid":true,"given":"Jo\u00e3o Paolo","family":"Bilibio","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Pedro Sadi","family":"Monteiro","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-0719-056X","authenticated-orcid":true,"given":"Giordana Campos","family":"Braga","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-7820-0027","authenticated-orcid":true,"given":"Nadjar","family":"Nitz","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"340","published-online":{"date-parts":[[2023,6,23]]},"reference":[{"issue":"8","key":"pone.0287633.ref001","doi-asserted-by":"crossref","first-page":"548","DOI":"10.2471\/BLT.18.228486","article-title":"Chlamydia, gonorrhoea, trichomoniasis and syphilis: global prevalence and incidence estimates, 2016","volume":"97","author":"J Rowley","year":"2019","journal-title":"Bull World Health Organ"},{"issue":"Suppl 5","key":"pone.0287633.ref002","doi-asserted-by":"crossref","first-page":"20302","DOI":"10.7448\/IAS.18.6.20302","article-title":"Addressing gender inequalities to improve the sexual and reproductive health and wellbeing of women living with HIV","volume":"18","author":"A. 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