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The Largest Outbreak of Acute Gastroenteritis of Mixed Norovirus Genogroups in the Coast of São Paulo State, Brazil.

Viruses - 13 May 2026

Carmona Rita de Cássia, Guadagnucci Simone, Esteves Mayara, Costa Carla, Blotta Simone, Morais Daniele de, Machado Bráulio, Martins Cecilia, Ristori Christiane, Rowlands Ruth, Pinto Damaris, Souza Vitória de, Liphaus Bernadete, Xavier Alessandra, Sato Maria Inês, Barbosa Mikaela, Araújo Ronalda de, Cardoso Vanessa, Candido Luciano, Silva Renan, Cilli Audrey

Abstract excerpt

During the Brazilian summer, from 29 December 2024, to 6 March 2025, a large cluster of acute gastroenteritis (AGE) outbreaks was reported along the coast of São Paulo State, Brazil, peaking in January 2025. Overall, 55 outbreaks involving 755 cases were officially notified, while more than 76,000 medical consultations for AGE were recorded across the region during the same period. A total of 50 stool samples...

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PMID: 42198758
DOI: 10.3390/v18050555
PMCID: PMC13211592

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