Prevalence of antibodies to serotypes of Bluetongue virus and Anaplasma marginale in Montana feeder cattle: 2002-2003.
In a serologic survey of Montana-source weaned calves and yearling cattle, the apparent prevalence of antibodies to Bluetongue virus was 0.68% and 1.26% in 2002 and 2003, respectively, and to Anaplasma marginale at a positive cutoff at 30% inhibition it was 1.82% and 1.35% in 2002 and 2003, and at a positive cutoff at 42% inhibition it was 0.76% and 0.55% in 2002 and 2003, respectively, suggesting that the risk of importing infected animals was very low.
Van Donkersgoed
Joyce
J
State of Montana, Department of Livestock, P.O. Box 202001, Helena, Montana 59620-2001, USA.
Linfield
Thomas F T
TF
Bridges
Marc
M
Raths
Dick
D
Dargatz
David
D
Wagner
Bruce
B
Block
Jean
J
Knoop
Doug
D
Walton
Thomas E
TE
D042322:Anaplasma marginale / Q000276:immunology*; D000712:Anaplasmosis / Q000453:epidemiology*; D000818:Animals; D000907:Antibodies, Bacterial / Q000097:blood; D000914:Antibodies, Viral / Q000097:blood; D001819:Bluetongue / Q000453:epidemiology*; D001820:Bluetongue virus / Q000276:immunology*; D002417:Cattle; D002418:Cattle Diseases / Q000453:epidemiology* / Q000382:microbiology / Q000821:virology; D009009:Montana / Q000453:epidemiology; D016036:Seroepidemiologic Studies; D012703:Serotyping / Q000662:veterinary
D000907:Antibodies, Bacterial; D000914:Antibodies, Viral