| prevalence and risk association for trichinella infection in domestic pigs in the northeastern united states. | to determine trichinella infection in a selected group of farm raised pigs, 4078 pigs from 156 farms in new england and new jersey, employing various management styles, were selected based on feed type (grain, regulated waste, non-regulated waste). the number of pigs bled from each farm were based on detecting infection assuming a 0.05 prevalence rate. serum was tested by enzyme-linked immunoassay for antibodies to trichinella spiralis. seropositive pigs were tested by digestion at slaughter (wh ... | 1999 | 10223350 |