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serologic survey for infectious pathogens in free-ranging american bison.from november 1991 through march 1992, we evaluated 101 free-ranging american bison (bison bison) from yellowstone national park, wyoming (usa) for exposure to infectious organisms that commonly infect cattle. no titers were detected for bluetongue virus, bovine leukemia virus, or campylobacter fetus in these 101 bison. detectable antibodies occurred against anaplasma marginale (eight of 76, 11%), bovine respiratory syncytial virus (31 of 101, 31%), bovine viral diarrhea (31 of 101, 31%), bovine ...19979131564
experimental anaplasmosis in american bison: persistence of infections of anaplasma marginale and non-susceptibility to a. ovis.blood collected 314 and 496 days after experimentally infecting splenectomized and spleen-intact american bison (bison bison) with anaplasma marginale was infective for splenectomized bovine steers. the pathogenesis was identical to that seen in bovine studies using bovine blood inoculations. a splenectomized bison remained normal clinically, hematologically and serologically for 10 mo after repeated inoculation of ovine blood infected with a. ovis.19863712642
absence of anaplasma marginale infection in american bison raised in an anaplasmosis endemic area.blood was collected at slaughter from 132 adult american bison (bison bison) raised in an anaplasmosis endemic area where the vector dermacentor andersoni (equals venustus) is indigenous. hematologic studies revealed no indication of clinical anaplasmosis. card agglutination and complement-fixation tests on all bison serums were negative. eleven anaplasmosis-susceptible calves each inoculated with 204 ml of blood pooled from 12 bison did not develop anaplasmosis. results of this study indicate a ...19751152178
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