Survey of anaplasmosis in elk of the Clearwater National Forest (Idaho).
Samples of blood from 27 free-roaming elk (Cervus canadensis canadensis) from the Clearwater National Forest in north central Idaho were tested by the rapid card agglutination test and complement-fixation test for the presence of antibodies against Anaplasma marginale. The serum card test and complement-fixation test gave incomplete and false-positive reactions; the plasma card test did not give any reactions. Anaplasma bodies or other blood parasites were not observed in stained smears of elk blood. Blood from 11 elk, including 2 that were serum card test-positive, did not produce clinical, hematologic, or serologic evidence of infection in 3 anaplasmosis-susceptible bovine calves.
D000712:Anaplasmosis / Q000453:epidemiology* / Q000276:immunology; D000818:Animals; D001188:Artiodactyla; D002353:Carrier State / Q000453:epidemiology / Q000276:immunology / Q000662:veterinary; D005260:Female; D007061:Idaho