Yellow fever virus resurgence in Sao Paulo State, Brazil, 2024–2025

Revista do Instituto de Medicina Tropical de São Paulo 2026 Open access

Read full text
Authors: Mariana Sequetin Cunha, Juliana Mariotti Guerra, Márcio Junio Lima Siconelli, Benedito Antônio Lopes da Fonseca, Jessica Caroline de Almeida Dias, Gisele Dias de Freitas, Ester Cerdeira Sabino, Erika R. Manuli, Geovana M. Pereira, Ian Nunes Valença, Patrícia Sayuri Silvestre Matsumoto, N F O Faria
+1 more Natália Coelho Couto de Azevedo Fernandes
DOI: 10.1590/s1678-9946202668013
Cited by: 3
References: 15

Abstract

We report the detection of yellow fever virus in Campinas and Ribeirao Preto city areas (two geographic areas within Sao Paulo State, Brazil) from September 2024 to February 2025. Phylogenetic analysis of six new genomes showed a re-introduction in 2022 from Midwest Brazil followed by persistence in Sao Paulo State. Continued surveillance in neotropical primates is required to prevent cases in humans.

Fields of Study & Subjects

Mosquito-borne diseases and control Virology and Viral Diseases Zoonotic diseases and public health

Publication details

Journal / source
Revista do Instituto de Medicina Tropical de São Paulo
Publisher
FapUNIFESP (SciELO)
Volume
68
Pages
e13–e13
Publication date
1 January 2026
Language
EN