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Survey for antibodies against maedi-visna virus in sheep in the regions of Botucatu, Campinas, São Paulo and Piedade, state of São Paulo, Brazil

The purpose of the study was to evaluate the occurrence of infection with maedi-visna virus in sheep raised in the regions of Botucatu, Campinas, Piedade and São Paulo, state of São Paulo, Brazil, that showed symptoms of the disease. Blood serum samples collected from 226 sheep were submitted to the agar gel immunodiffusion technique for detection of antibodies against maedi-visna virus, and none of the samples tested was serum reactive. In conclusion, the maedi-visna virus has low frequency in animals raised in the regions studied.

Lentiviruses; small ruminants; maedi-

Instituto Biológico Av. Conselheiro Rodrigues Alves, 1252 - Vila Mariana - São Paulo - SP, 04014-002 - São Paulo - SP - Brazil