| isolation and pathogenicity of toxoplasma gondii in naturally infected (rustic farm) pigs in southern brazil. | this study reported a serological test for toxoplasma gondii infection in 100 pigs from 58 rural farms in the state of rio grande do sul, brazil. thirty-six pigs were seropositive (ifat≥1:64). bioassays were performed for all 36 seropositive pigs, and 17 isolates were obtained (47.2%). seven of these isolates (41.2%) were highly pathogenic to mice, as clinical signs of acute infection were observed, and tachyzoites were found in the peritoneal exudates, livers, and lungs. the remaining 10 isolat ... | 2014 | 24612744 |