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Volume 18, Number 3—March 2012
Research

Causes of Pneumonia Epizootics among Bighorn Sheep, Western United States, 2008–2010

Thomas E. BesserComments to Author , Margaret A. Highland, Katherine Baker, E. Frances Cassirer, Neil J. Anderson, Jennifer M. Ramsey, Kristin Mansfield, Darren L. Bruning, Peregrine Wolff, Joshua B. Smith, and Jonathan A. Jenks
Author affiliations: Washington State University, Pullman, Washington, USA (T.E. Besser, M.A. Highland, K. Baker); Washington Animal Disease Diagnostic Laboratory, Pullman (T.E. Besser); US Department of Agriculture Agricultural Research Service, Pullman (M.A. Highland); Idaho Department of Fish and Game, Lewiston, Idaho, USA (E.F. Cassirer); Montana Fish, Wildlife and Parks, Bozeman, Montana, USA (N.J. Anderson, J.M. Ramsey); Washington Department of Fish and Wildlife, Spokane Valley, Washington, USA (K. Mansfield); US Department of Agriculture Animal and Plant Health Inspection Service, Olympia, Washington, USA (D.L. Bruning); Nevada Department of Wildlife, Reno, Nevada, USA (P. Wolff); South Dakota State University, Brookings, South Dakota, USA (J.B. Smith, J.A. Jenks)

Main Article

Table 3

Prevalence of organisms in bighorn sheep, western United States, 2008–2010*

Population No. tested No. (%) detected
Bibersteinia trehalosi Mannheimia haemolytica Pasteurella multocida lktA Mycoplasma ovipneumoniae
Affected during epizootic
East Fork Bitterroot, MT 5 3† 1 4 2 4
Anaconda, MT 5 5 5 5 0 5
Bonner, MT 6 2 2 0 0 6
Lower Rock Creek, MT 4 3 3 3 0 3
East Humboldt and Ruby Mountains, NV 6 6 5 0 1 6
Spring Creek, SD 5 5 3 4 3 5
Yakima Canyon, WA 8 5 4 5 0 8
Hells Canyon, OR and WA 5 5 2 0 4 5
Total 44 34 (77.3) 25 (56.8) 21 (47.7) 10 (22.7) 42 (95.5)
Healthy during epizootic
Yakima Canyon, WA 6 5 3 0 1 2
Bonner, MT 1 0 0 0 0 1
Spring Creek, SD 1 1 1 0 0 0
Total 8 6 (75.0) 4 (50.0) 0 1 (12.5) 3 (37.5)
Healthy, no epizootic
Quilomene, WA 3 1 3 0 0 0
Hells Canyon (Asotin Creek), OR and WA 2 2 1 1 0 0
Total 5 3 (60) 4 (80) 1 (20) 0 0

*Organisms detected by PCR and/or aerobic culture. MT, Montana; NV, Nevada; SD, South Dakota; WA, Washington; OR, Oregon.
†Number of bighorn sheep tested in which the given agent was detected by PCR and/or bacteriologic culture.

Main Article

Page created: February 16, 2012
Page updated: February 16, 2012
Page reviewed: February 16, 2012
The conclusions, findings, and opinions expressed by authors contributing to this journal do not necessarily reflect the official position of the U.S. Department of Health and Human Services, the Public Health Service, the Centers for Disease Control and Prevention, or the authors' affiliated institutions. Use of trade names is for identification only and does not imply endorsement by any of the groups named above.
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