| 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 |
| serologic evidence of west nile virus exposure in north american mesopredators. | sera from 936 mammalian mesopredators (virginia opossums, gray foxes, striped skunks, hooded skunks, raccoons, a bobcat, and a red fox) were collected during 2003 and 2004 in california, arizona, texas, louisiana, ohio, and wyoming and screened for flavivirus-specific antibodies by an epitope-blocking enzyme-linked immunosorbent assay (blocking elisa). serum samples positive for antibodies against flaviviruses were screened for west nile virus (wnv)-specific antibodies by blocking elisa and sele ... | 2007 | 17255248 |