Vaccinia Virus in Humans and Cattle in Southwest Region of São Paulo State, Brazil

Jane Megid University of São Paulo State, School of Veterinary Medicine, Department of Veterinary Hygiene and Public Health, Botucatu, Brazil; Instituto Biologico de São Paulo, Laboratorio de Viroses de Bovideos, São Paulo, Brazil

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Camila Michele Appolinário University of São Paulo State, School of Veterinary Medicine, Department of Veterinary Hygiene and Public Health, Botucatu, Brazil; Instituto Biologico de São Paulo, Laboratorio de Viroses de Bovideos, São Paulo, Brazil

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Hélio Langoni University of São Paulo State, School of Veterinary Medicine, Department of Veterinary Hygiene and Public Health, Botucatu, Brazil; Instituto Biologico de São Paulo, Laboratorio de Viroses de Bovideos, São Paulo, Brazil

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Edviges Maristela Pituco University of São Paulo State, School of Veterinary Medicine, Department of Veterinary Hygiene and Public Health, Botucatu, Brazil; Instituto Biologico de São Paulo, Laboratorio de Viroses de Bovideos, São Paulo, Brazil

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Liria Hiromi Okuda University of São Paulo State, School of Veterinary Medicine, Department of Veterinary Hygiene and Public Health, Botucatu, Brazil; Instituto Biologico de São Paulo, Laboratorio de Viroses de Bovideos, São Paulo, Brazil

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A new outbreak of Vaccinia virus was observed in Southwest region of São Paulo State, Brazil. The disease was observed in four small dairy farms with manual milking. Lesions were detected in cattle and in humans previously vaccinated and not vaccinated against smallpox. Although several reports of Vaccinia virus outbreaks have been occurring in Brazil, it was not yet reported in this region. This outbreak reinforces the viral circulation in our country. The disease in persons previously vaccinated and not vaccinated against smallpox reinforces the absence of immunity, the risk to the human health, and the need for more epidemiologic and immunologic studies.

Author Notes

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