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Multiple Introductions of Domestic Cat Feline Leukemia Virus in Endangered Florida Panthers1
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January 2019
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Source: Emerg Infect Dis. 25(1):92-101
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Alternative Title:Emerg Infect Dis
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Description:The endangered Florida panther (Puma concolor coryi) had an outbreak of infection with feline leukemia virus (FeLV) in the early 2000s that resulted in the deaths of 3 animals. A vaccination campaign was instituted during 2003-2007 and no additional cases were recorded until 2010. During 2010-2016, six additional FeLV cases were documented. We characterized FeLV genomes isolated from Florida panthers from both outbreaks and compared them with full-length genomes of FeLVs isolated from contemporary Florida domestic cats. Phylogenetic analyses identified at least 2 circulating FeLV strains in panthers, which represent separate introductions from domestic cats. The original FeLV virus outbreak strain is either still circulating or another domestic cat transmission event has occurred with a closely related variant. We also report a case of a cross-species transmission event of an oncogenic FeLV recombinant (FeLV-B). Evidence of multiple FeLV strains and detection of FeLV-B indicate Florida panthers are at high risk for FeLV infection.
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Pubmed ID:30561312
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Pubmed Central ID:PMC6302599
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Volume:25
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Issue:1
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