Occurrence of Toxoplasma gondii in slaughter pigs in India.

A serological and cultural investigation on the occurrence of T. gondii amongst slaughter pigs in north India has been carried out. Toxoplasma antibodies were found in the sera of 31.5% of the 178 pigs examined by the indirect haemagglutination test. Seropositivity at titres of 1:128 or more was shown by 11.8% of the animals. Isolation by mouse passage was successful in one out of the 26 tissue samples from 17 pigs. This is the first isolation of T. gondii from pigs in this country.