Seroprevalence and Risk Factors of Toxoplasma gondii Infection in Buffaloes, Sheep and Goats in Yunnan Province, Southwestern China

The seroprevalence of Toxoplasma gondii infection in buffaloes, sheep and goats in Yunnan Province, southwestern China was conducted between May 2012 and December 2013. A total of 973 (427 buffaloes, 154 sheep and 392 goats) serum samples were collected from seven administrative regions of Yunnan Province, and exam­ined for T. gondii antibodies by indirect hemagglutination (IHA) test. Some risk fac­tors related to species, age, gender and geographical origin were determined using a multinomial logistic regression. The overall seroprevalence of T. gondii in ruminant species was estimated at 11.9%. The final logistic regression model demonstrated that host species and geographical origin were the main risk factors associated with T. gondii infection (P﹤0.05). Taken together, the results of the present study revealed a high expo­sure to T. gondii in ruminant species in Yunnan Province, which has an important implication for public health.