During a vaccinia virus (VACV) outbreak in São Paulo State, Brazil, blood samples were collected from cows, humans, other domestic animals, and wild mammals. Samples from 3 dogs and 3 opossums were positive for VACV by PCR. Results of gene sequencing yielded major questions regarding other mammalian species acting as reservoirs of VACV.

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http://www.ncbi.nlm.nih.gov/pmc/articles/PMC4734541PMC
http://dx.doi.org/10.3201/eid2202.140747DOI Listing

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