Seroepidemiology Surveys of Equine arteritis virus in Equids Population of Center-West Region of S?o Paulo State, Brazil

摘要

In the present study were analyzed 554 serum samples from equids originated from 82 farms locatedin nine municipalities in the center-west region of S?o Paulo state, Brazil, with the objective of diagnosticanimals serum reactive to Equine Arteritis Virus (EAV), applying the microneutralization test. The samplingrevealed that 1.99% of animals showed soroconversion examined to microneutralization test anti-EAV.The frequencies for municipalities ranged from 1.29% (Bauru), 3.74% (Agudos), 7.69% (Piratininga) to10% (Duartina) of equine serum-reagents to EAV. The races affected were older than two years. Betweensexes analyzed, the major frequency animal’s serum reagents for EAV - 2.72% - was observed in the groups ofmales versus 1.62% for female. In the region studied, stallions have detachable importance epidemiological inthe chain of EAV carriers via the semen or natural mating. A significant positive result for females (6/370),mainly responsible for transmission via excretions of abortions and male (transmission via semen) revealedthe importance of diagnostic microneutralization test for the control of epizootic outbreaks and inapparentcarriers to EAV.