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Published Thursday, November 08, 2012: Research in Veterinary Science, In Press, Corrected Proof, Available online 8 November 2012
Verification of Natural Infection of Peridomestic Rodents by PCV2 on Commercial Swine Farms
Albanno Leonard Braz Campos Pinheiro, Luiz Henrique Silva Bulos, Thiago Souza Onofre, Michelle de Paula Gabardo, Otávio Valério de Carvalho, Mariana Costa Fausto, Roberto Maurício Carvalho Guedes, Márcia Rogéria de Almeida, Abelardo Silva Júnior
The porcine circovirus-2 (PCV2) is the main agent responsible for porcine circovirus associated diseases (PCVAD). Few studies have been done regarding PCV2 infection in other species. The purpose of this study was to investigate the occurrence of PCV2 infection in the peridomestic rodent species Mus musculus and Rattus rattus on commercial pig farms in Brazil. Immunohistochemistry assay demonstrated PCV2 in the spleen, lung and kidney. Viral DNA was detected in tissues by nested PCR assay. Partial sequences of PCV2 genomes detected in the rodents had strong identity with gene sequences of PCV2 isolates from pigs. These results show that the studied peridomestic rodent species can be naturally infected by PCV2. However, further studies are needed to confirm PCV2 transmission from rodents to pigs.

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