{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,10,5]],"date-time":"2026-10-05T21:56:40Z","timestamp":1791237400945,"version":"4.1.0"},"reference-count":0,"publisher":"Instituto Nacional de Salud (Peru)","license":[{"start":{"date-parts":[[2026,9,17]],"date-time":"2026-09-17T00:00:00Z","timestamp":1789603200000},"content-version":"unspecified","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Rev Peru Med Exp Salud Publica"],"abstract":"<jats:p>Objectives. To estimate the seroprevalence of measles IgG antibodies in people aged 15 years or older residing\u00a0 in Lima Metropolitan and Callao, Peru, through\u00a0 secondary analysis of serum samples obtained from the\u00a0 National Institute of Health\u2019s Non-Communicable\u00a0 Diseases Surveillance between 2024 and 2025. Materials\u00a0 and methods. A descriptive, population-based, cross- sectional study that included 770 serum samples, in\u00a0 which the presence of measles IgG antibodies was\u00a0 determined using a commercial ELISA assay. Global\u00a0 seroprevalence was estimated and stratified by sex, age\u00a0 group, and origin. Results. After data expansion, 53.6%\u00a0 of the studied population corresponded to women. The\u00a0 global seroprevalence was 82.1% (95% CI: 78.6%\u201385.1%).\u00a0 Adults aged 20 to 29 years showed the lowest\u00a0 seroprevalence (55.6%), followed by adolescents aged 15 to 19 years (72.0%). Seroprevalence progressively\u00a0 increased with age and exceeded 95% in people aged 50 years or older. No significant differences were observed\u00a0 by sex or area of origin. Conclusions. Immunity gaps\u00a0 against measles are evident mainly in young adults, in a\u00a0 context of disease resurgence in the Americas and an\u00a0 ongoing outbreak in Peru. These findings highlight the\u00a0 value of seroprevalence studies to identify susceptible\u00a0 groups and guide public health interventions, such as\u00a0 targeted vaccination strategies, strengthening\u00a0 epidemiological surveillance, and information ampaigns to reduce immunity gaps and contribute to maintaining\u00a0 measles elimination in Peru.<\/jats:p>","DOI":"10.17843\/rpmesp.2026.433.16877","type":"journal-article","created":{"date-parts":[[2026,10,5]],"date-time":"2026-10-05T21:12:11Z","timestamp":1791234731000},"page":"301-10","source":"Crossref","is-referenced-by-count":0,"title":["Seroprevalencia de anticuerpos IgG contra el sarampi\u00f3n en adolescentes y adultos de Lima Metropolitana y Callao, Per\u00fa, 2024\u20132025","Seroprevalence of IgG antibodies against measles in adolescents and adults from Metropolitan Lima and Callao, Peru, 2024\u20132025"],"prefix":"10.17843","author":[{"ORCID":"https:\/\/orcid.org\/0000-0002-0948-0114","authenticated-orcid":false,"given":"Natalia","family":"Vargas-Herrera","sequence":"first","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-3075-7755","authenticated-orcid":false,"given":"Margot","family":"Vidal-Anzardo","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-3532-3120","authenticated-orcid":false,"given":"Chandel","family":"Farro\u00f1ay-Garc\u00eda","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-3364-8212","authenticated-orcid":false,"given":"Nestor E.","family":"Cabezudo Pillpe","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-1793-0223","authenticated-orcid":false,"given":"Roxana","family":"Ram\u00edrez-Salcedo","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0009-0005-0413-4385","authenticated-orcid":false,"given":"Edda","family":"Salamanca-Pacheco","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0009-0004-0414-042X","authenticated-orcid":false,"given":"Myriam","family":"Yasuda-Espinoza","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-5554-3542","authenticated-orcid":false,"given":"V\u00edctor","family":"Fiestas-Sol\u00f3rzano","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"7920","published-online":{"date-parts":[[2026,9,17]]},"container-title":["Revista Peruana de Medicina Experimental y Salud P\u00fablica"],"original-title":[],"link":[{"URL":"https:\/\/rpmesp.ins.gob.pe\/index.php\/rpmesp\/article\/download\/16877\/6312","content-type":"application\/pdf","content-version":"vor","intended-application":"text-mining"},{"URL":"https:\/\/rpmesp.ins.gob.pe\/index.php\/rpmesp\/article\/download\/16877\/6322","content-type":"application\/pdf","content-version":"vor","intended-application":"text-mining"},{"URL":"https:\/\/rpmesp.ins.gob.pe\/index.php\/rpmesp\/article\/download\/16877\/6312","content-type":"unspecified","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2026,10,5]],"date-time":"2026-10-05T21:12:12Z","timestamp":1791234732000},"score":1,"resource":{"primary":{"URL":"https:\/\/rpmesp.ins.gob.pe\/index.php\/rpmesp\/article\/view\/16877"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[2026,9,17]]},"references-count":0,"URL":"https:\/\/doi.org\/10.17843\/rpmesp.2026.433.16877","relation":{},"ISSN":["1726-4642","1726-4634"],"issn-type":[{"value":"1726-4642","type":"electronic"},{"value":"1726-4634","type":"print"}],"subject":[],"published":{"date-parts":[[2026,9,17]]}}}