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Yellow fever virus resurgence in Sao Paulo State, Brazil, 2024-2025
Mariana Sequetin Cunha1, Juliana Mariotti Guerra1, Márcio Junio Lima Siconelli2
1Instituto Adolfo Lutz, São Paulo, São Paulo, Brazil.
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.
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