[Serological investigation of Toxoplasma gondii infection in HIV positive cases in Dali and Dehong of Yunnan].

Serum samples were collected from HIV positive cases (927) and HIV, negative ones (80) from June 2010 to August 2011 in Dali and Dehong Prefectures of Yunnan. Serum anti-Toxoplasma gondii IgG was detected by ELISA. The overall anti-Toxoplasma gondii IgG positive rate among HIV positive cases and HIV negative ones was 35.1% (325/927) and 23.8% (19/80), respectively. In HIV positive cases, the seropositive rate was 30.3% (178/588) in Dali and 43.4% (147/339) in Dehong. The seropositive rate was significantly different among ethnic groups (chi2 = 28.433, P < 0.05). No significant difference was found among age groups (chi2 = 4.248, P > 0.05), and the age group of 41-60 showed the highest positive rate (36.1%, 103/285). The seropositive rate was 35.6% (203/571) in males and 34.3% (122/356) in females (chi2 = 0.158, P > 0.05).