{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,7,27]],"date-time":"2026-07-27T12:07:57Z","timestamp":1785154077938,"version":"3.55.0"},"reference-count":12,"publisher":"FapUNIFESP (SciELO)","license":[{"start":{"date-parts":[[2026,1,1]],"date-time":"2026-01-01T00:00:00Z","timestamp":1767225600000},"content-version":"vor","delay-in-days":0,"URL":"http:\/\/creativecommons.org\/licenses\/by\/4.0\/"},{"start":{"date-parts":[[2026,1,1]],"date-time":"2026-01-01T00:00:00Z","timestamp":1767225600000},"content-version":"am","delay-in-days":0,"URL":"http:\/\/creativecommons.org\/licenses\/by\/4.0\/"},{"start":{"date-parts":[[2026,1,1]],"date-time":"2026-01-01T00:00:00Z","timestamp":1767225600000},"content-version":"tdm","delay-in-days":0,"URL":"http:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Rev. bras. epidemiol."],"abstract":"<jats:p>ABSTRACT  Objective To describe the epidemiological investigation following laboratory confirmation of West Nile virus in an infant residing in Mato Grosso, Brazil.  Methods: Descriptive study conducted between February 11 and 13, 2026, following notification and diagnostic confirmation by molecular biology. Passive and active surveillance were implemented.  Results: The index case had symptom onset on December 18, 2025, confirmed by molecular biology in a cerebrospinal fluid sample collected on December 20, 2025. In the active investigation, 112 residents were interviewed, identifying 29 symptomatic individuals (25.9%), of whom eight reported neurological manifestations. Environmental conditions favorable to vector proliferation were observed.  Conclusion: The findings suggest possible viral circulation and reinforce the need to intensify integrated human-animal-environmental surveillance, with expanded laboratory and entomological investigation in our territory.<\/jats:p>","DOI":"10.1590\/1980-549720260029","type":"journal-article","created":{"date-parts":[[2026,7,27]],"date-time":"2026-07-27T11:41:14Z","timestamp":1785152474000},"source":"Crossref","is-referenced-by-count":0,"title":["Epidemiological investigation of a confirmed case of West Nile virus in Campo Novo do Parecis, Mato Grosso, Brazil, 2025\u20132026"],"prefix":"10.1590","volume":"29","author":[{"ORCID":"https:\/\/orcid.org\/0009-0004-8624-6593","authenticated-orcid":false,"given":"Jo\u00e3o Pedro Rocha","family":"Nogueira","sequence":"first","affiliation":[{"name":"Secretaria de Estado de Sa\u00fade de Mato Grosso,  Brazil"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0009-0009-4626-4654","authenticated-orcid":false,"given":"Cecilia Cintra dos","family":"Reis","sequence":"additional","affiliation":[{"name":"Secretaria de Estado de Sa\u00fade de Mato Grosso,  Brazil"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-2511-9185","authenticated-orcid":false,"given":"Alba Valeria Gomes de","family":"Melo","sequence":"additional","affiliation":[{"name":"Secretaria de Estado de Sa\u00fade de Mato Grosso,  Brazil"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-1920-2713","authenticated-orcid":false,"given":"Janaina","family":"Pauli","sequence":"additional","affiliation":[{"name":"Secretaria de Estado de Sa\u00fade de Mato Grosso,  Brazil"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-2823-7459","authenticated-orcid":false,"given":"Ruberlei Godinho de","family":"Oliveira","sequence":"additional","affiliation":[{"name":"Secretaria de Estado de Sa\u00fade de Mato Grosso,  Brazil; Hospital Universit\u00e1rio J\u00falio M\u00fcller,  Brazil"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"530","published-online":{"date-parts":[[2026]]},"reference":[{"key":"ref1","first-page":"101229","article-title":"Active West Nile virus transmission in Brazil: an epidemiological study.","volume":"51","author":"de Lima STS","year":"2025","journal-title":"Lancet Reg Health Am"},{"issue":"11","key":"ref2","doi-asserted-by":"crossref","first-page":"72330","DOI":"10.1093\/trstmh\/trt081","article-title":"West Nile virus surveillance, Brazil, 2008-2010.","volume":"107","author":"Ometto T","year":"2013","journal-title":"Trans R Soc Trop Med Hyg"},{"key":"ref3","series-title":"Minist\u00e9rio da Sa\u00fade. Secretaria de Vigil\u00e2ncia em Sa\u00fade e Ambiente. Guia de Vigil\u00e2ncia em Sa\u00fade.","year":"2023","edition":"6"},{"issue":"7","key":"ref4","doi-asserted-by":"crossref","first-page":"589","DOI":"10.3390\/pathogens9070589","article-title":"West Nile Virus: An Update on Pathobiology, Epidemiology, Diagnostics, Control and \u201cOne Health\u201d Implications.","volume":"9","author":"Habarugira G","year":"2020","journal-title":"Pathogens"},{"issue":"2","key":"ref5","doi-asserted-by":"crossref","first-page":"377","DOI":"10.4269\/ajtmh.15-0170","article-title":"West Nile Virus Encephalitis: The First Human Case Recorded in Brazil.","volume":"93","author":"Vieira MACS","year":"2015","journal-title":"Am J Trop Med Hyg"},{"key":"ref6","doi-asserted-by":"crossref","first-page":"e180332","DOI":"10.1590\/0074-02760180332","article-title":"First isolation of West Nile virus in Brazil.","volume":"114","author":"Martins LC","year":"2019","journal-title":"Mem Inst Oswaldo Cruz"},{"key":"ref7","article-title":"Lei n\u00ba 14.792, de 5 de janeiro de 2024. Institui o Dia Nacional da Sa\u00fade \u00danica. Di\u00e1rio Oficial da Uni\u00e3o [Internet].","year":"2024","journal-title":"Bras\u00edlia, 08 jan."},{"key":"ref8","first-page":"e202401483","article-title":"Serological evidence of West Nile virus infection in wild birds in the area of the first confirmed human case of West Nile fever in Brazil.","volume":"15","author":"Lima PC","year":"2024","journal-title":"Rev Pan-Amaz Saude"},{"issue":"1","key":"ref9","doi-asserted-by":"crossref","first-page":"2","DOI":"10.1016\/j.jped.2019.08.005","article-title":"Arboviral diseases in pediatrics.","volume":"96","author":"Martins MM","year":"2020","journal-title":"J Pediatr"},{"issue":"5","key":"ref10","doi-asserted-by":"crossref","first-page":"85865","DOI":"10.1590\/S0034-89102012000500013","article-title":"Bionomics of Culex quinquefasciatus within urban areas of Rio de Janeiro, Southeastern Brazil.","volume":"46","author":"David MR","year":"2012","journal-title":"Rev Sa\u00fade P\u00fablica"},{"issue":"3","key":"ref11","doi-asserted-by":"crossref","first-page":"288","DOI":"10.3390\/vetsci12030288","article-title":"West Nile Virus (WNV): One-Health and Eco-Health Global Risks.","volume":"12","author":"Bruno L","year":"2025","journal-title":"Vet Sci"},{"issue":"11","key":"ref12","doi-asserted-by":"crossref","first-page":"104353","DOI":"10.1093\/trstmh\/trac044","article-title":"Impact of climate change on West Nile virus distribution in South America.","volume":"116","author":"Lorenz C","year":"2022","journal-title":"Trans R Soc Trop Med Hyg"}],"container-title":["Revista Brasileira de Epidemiologia"],"original-title":["Investiga\u00e7\u00e3o epidemiol\u00f3gica de caso confirmado de v\u00edrus do Nilo Ocidental em Campo Novo do Parecis, Mato Grosso, Brasil, 2025\u20132026"],"link":[{"URL":"http:\/\/www.scielo.br\/scielo.php?script=sci_pdf&pid=S1415-790X2026000101029&tlng=en","content-type":"unspecified","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2026,7,27]],"date-time":"2026-07-27T11:41:16Z","timestamp":1785152476000},"score":1,"resource":{"primary":{"URL":"http:\/\/www.scielo.br\/scielo.php?script=sci_arttext&pid=S1415-790X2026000101029&tlng=en"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[2026]]},"references-count":12,"alternative-id":["S1415-790X2026000101029"],"URL":"https:\/\/doi.org\/10.1590\/1980-549720260029","relation":{"is-translation-of":[{"id-type":"doi","id":"10.1590\/1980-549720260029.2","asserted-by":"subject"},{"id-type":"doi","id":"10.1590\/1980-549720260029.2","asserted-by":"object"}]},"ISSN":["1980-5497","1415-790X"],"issn-type":[{"value":"1980-5497","type":"electronic"},{"value":"1415-790X","type":"print"}],"subject":[],"published":{"date-parts":[[2026]]},"article-number":"e260029"}}