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Volume 15, Number 12—December 2009

Dispatch

Wild Felids as Hosts for Human Plague, Western United States

Sarah N. BevinsComments to Author , Jeff A. Tracey, Sam P. Franklin, Virginia L. Schmit, Martha L. MacMillan, Kenneth L. Gage, Martin E. Schriefer, Kenneth A. Logan, Linda L. Sweanor, Mat W. Alldredge, Caroline Krumm, Walter M. Boyce, Winston Vickers, Seth P.D. Riley, Lisa M. Lyren, Erin E. Boydston, Robert N. Fisher, Melody E. Roelke, Mo Salman, Kevin R. Crooks, and Sue VandeWoude
Author affiliations: Colorado State University, Fort Collins, Colorado, USA (S.N. Bevins, J.A. Tracey, S.P. Franklin, V.L. Schmit, M.L. MacMillan, L.L. Sweanor, C. Krumm, M. Salman, K.R. Crooks, S. VandeWoude); Centers for Disease Control and Prevention, Fort Collins (K.L. Gage, M.E. Schriefer); Colorado Division of Wildlife, Montrose, Colorado, USA (K.A. Logan, M.W. Alldredge); University of California, Davis, California, USA (W.M. Boyce, W. Vickers); National Park Service, Thousand Oaks, California, USA (S.P.D. Riley); United States Geological Survey, Irvine, California, USA (L.M. Lyren, E.E. Boydston, R. Fisher); National Cancer Institute, Bethesda, Maryland, USA (M.E. Roelke)

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Table 1

Sample sizes for categorical variables, by location, in serosurvey for Yersinia pestis in wild felids, western United States, 2002–2008*

Category Front 
Range, CO Orange County, CA San Diego/Riverside counties, CA Ventura County, CA Western Slope, CO Mean seroprevalence 
(95% confidence interval)
Species
Bobcat 0 73 0 61 78 13.77 (4.90–33.07)
Puma
33
5
38
4
36
8.17 (2.97–20.56)
Age
Young (< 2 y) 5 23 5 29 45 6.70 (2.31–17.87)
Adult (>2 y)
27
49
27
31
68
16.52 (7.03–34.09)
Sex
F 20 37 20 32 43 14.01 (5.65–30.70)
M
13
40
18
29
70
8.02 (3.01–19.69)
Season
Fall 3 18 6 15 21 0
Spring 13 7 18 1 2 23.67 (11.27–43.09)
Summer 6 6 2 3 90 7.49 (0.79–45.06)
Winter 10 47 12 42 112 6.31 (2.74–13.88)

*All samples were serum samples, except for Western Slope bobcats, which were thoracic fluid samples.

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