Objective To analyze the c22-8gene sites in Toxoplasma gondii infecting humans in Dali,Yunnan Province. Method Nested PCR was used to amplify the c22-8gene from blood samples from individuals who were HIV-positive in Dali.The product was cleaved with the restriction enzymes BsmAⅠ and MboⅡ,and gene sequences were determined and analyzed. Results In total,291 blood samples were collected from HIV-positive individuals.The c22-8gene fragment was successfully amplified from 32 samples.The c22-8gene fragment was ...