Revista da Sociedade Brasileira de Medicina Tropical · Published 2026-06-15 · DOI 10.1590/0037-8682-0558-2025
Maria Goreth Matos de Andrade Barberino, Ana Verena Almeida Mendes, Gabriela Noronha Marques, Camila Araújo de Lorenzo Barcia, Marcela Almeida Muhana, Aline Macedo Carvalho Freitas, Mariana Leal de Souza Mercês, Ênio Silva Soares, Lázaro José Rodrigues de Souza, Arabela Leal e Silva de Mello, Felicidade Mota Pereira, André Felipe das Mercês Santos, Dália dos Prazeres Rodrigues, Guilherme de Sousa Ribeiro, Cristiane Wanderley Cardoso
ABSTRACT Cholera has caused multiple pandemics and remains a significant global public health threat. After 18 years without autochthonous transmission in Brazil, a 60-year-old man with no travel history presented with abdominal discomfort and acute watery diarrhea. Laboratory testing detected Vibrio cholerae O1 Ogawa, prompting classification as a suspected cholera case. However, genomic analysis showed that the strain lacked the toxigenic virulence factor required to cause cholera, leading to its reclassification as a non-cholera case. This investigation highlights the importance of clinical suspicion, advanced laboratory diagnostics, and continuous epidemiological surveillance for accurate case identification and an appropriate public health response.
Abstract from DOAJ. Public domain (CC0 1.0).
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Barberino, M., Mendes, A., Marques, G., et al. (2026). Investigation of a Suspected Autochthonous Cholera Case in Brazil After an 18-Year Absence of Reported Cases. Revista da Sociedade Brasileira de Medicina Tropical. https://doi.org/10.1590/0037-8682-0558-2025