| seroprevalence of toxoplasma gondii in domestic sheep in oaxaca state, mexico. | the seroprevalence of toxoplasma gondii infection in sheep in southern mexico is largely unknown. antibodies to t. gondii were determined in serum samples of 429 sheep from 4 farms in 2 geographical regions in oaxaca state, mexico, using the modified agglutination test (mat); 99 (23.1%) of the 429 sheep had positive mat titers: 1:25 in 35, 1:50 in 18, 1:100 in 7, 1:200 in 1, 1:400 in 3, 1:800 in 10, 1:1,600 in 5, and 1:3,200, or higher, in 20. seroprevalence of t. gondii infection varied with ma ... | 2013 | 22712886 |