| seroprevalence and risk factors associated with toxoplasma gondii in domestic pigs from spain. | serum samples from 2970 (1400 sows, 1570 fattening) pigs, from 100 farms in the 10 main swine production regions in spain were tested for antibodies against t. gondii by the modified agglutination test (mat). antibodies to t. gondii (mat 1:25 or higher) were detected in 492 pigs (16.6%, 9.7% in fattening pigs and 24.2% in sows). the herd prevalence was 85.0% (95% ci: 78-92) and within-farm prevalence ranged from 2.9% to 92.8% (median=17.6%). statistically significant differences were observed am ... | 2010 | 20601110 |