title: Experimental infections of Anaplasma ovis in pronghorn antelope.
abstract: Anaplasma ovis was experimentally transmitted from sheep to pronghorn antelope (Antilocapra americana) and back to sheep. Anaplasma ovis was recovered in splenectomized sheep, from two of three spleen-intact pronghorns following their inoculation with blood from known A. ovis carrier sheep. These two pronghorns exhibited a 0.5% or higher A. ovis parasitemia within 48 days after exposure, and an anaplasmosis-positive serological response 91 days after exposure. Clinical signs of illness were not observed. Blood from the infected pronghorns produced disease in four splenectomized sheep.
mesh_terms: D000372:Agglutination Tests; D000709:Anaplasma / Q000302:isolation & purification; D000712:Anaplasmosis / Q000635:transmission*; D000818:Animals; D003168:Complement Fixation Tests; D004197:Disease Reservoirs / Q000662:veterinary*; D005260:Female; D008297:Male; D012418:Ruminants; D012756:Sheep; D012757:Sheep Diseases / Q000635:transmission*; D013156:Splenectomy