| toxoplasma gondii antibodies in naturally exposed wild coyotes, red foxes, and gray foxes and serologic diagnosis of toxoplasmosis in red foxes fed t. gondii oocysts and tissue cysts. | antibodies to toxoplasma gondii were determined in sera from 222 coyotes (canis latrans), 283 red foxes (vulpes vulpes), and 97 gray foxes (urocyon cinereoargenteus) from indiana, kentucky, michigan, and ohio during 1990-1993. sera were examined in 1:25, 1:100, and 1:500 dilutions by the modified direct agglutination test (mat) with formalinized whole tachyzoites plus mercaptoethanol. antibodies were found in 131 (59.0%) of 222 coyotes, 243 (85.9%) of 283 red foxes, and 73 (75.3%) of 97 gray fox ... | 1999 | 10219302 |
| seroprevalence of and risk factors for toxoplasma gondii in the us swine herd using sera collected during the national animal health monitoring survey (swine 2006). | the united states department of agriculture (usda) initiated the national animal health monitoring system (nahms) in 1983 to collect, analyse and disseminate data on animal health, management and productivity in us domestic livestock populations, including swine. the programme includes an on-farm serological sampling component which can be used to monitor seroprevalence of various pathogens, including toxoplasma gondii. the purpose of this study was to determine the seroprevalence of t. gondii i ... | 2010 | 19744304 |
| porcine toxoplasmosis in indiana. | toxoplasmosis was diagnosed at necropsy in a 4-week-old pig from a litter of 16 born to a clinically normal sow. multifocal acute necrosis of blood vessels and parenchyma was found in the small intestine, mesenteric lymph nodes, liver, lungs, and brain. numerous tachyzoites, ultrastructurally indistinguishable from toxoplasma gondii, were found in lesions. the affected pig and seven other littermates died after diarrhea had developed within 1 to 2 weeks of birth. the most likely source of infect ... | 1979 | 422464 |