Two hundred and twenty three serum samples were screened for the antitoxoplasma antibodies of IgG type by a direct agglutination method, of these 78 (34.9%) were sero-positive. In high risk groups 71 (40.1%) of 177 cases were positive, while in the low risk groups 7 (15.2%) out of 46 cases were positive. Sero-positive males were more than females, and the disease increased steadily with age. Of the high risk group the prevalence of toxoplasmosis was 53.7% in immunocompromised group, 44.7% in animal handlers, 39.8% in pregnancy wastage group and 25.8% in a congenitally abnormal children. A high percentage prevalence of toxoplasmosis was noticed in high risk groups as compared with low risk group.