Volume 15, Number 12—December 2009
Dispatch
Wild Felids as Hosts for Human Plague, Western United States
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.


