Volume 22, Number 12—December 2016
CME ACTIVITY - Synopsis
Investigation of and Response to 2 Plague Cases, Yosemite National Park, California, USA, 2015
Table 3
Summary of rodent trapping and seroprevalence of Yersinia pestis, by location, Yosemite National Park, August 5–October 22, 2015
Date | Location | Traps set, no. | Rodents caught, no. | Trap success, % | Rodents tested, no. | Y. pestis–positive rodents, no. | Y. pestis seroprevalence, % |
---|---|---|---|---|---|---|---|
Aug 5 | Crane Flat CG | 160 | 11 | 6.9 | 11 | 1 | 9.1 |
Aug 25 | Glacier Point | 100 | 30 | 30.0* | 27 | 2 | 7.4 |
Aug 25 | Crane Flat CG | 100 | 13 | 13.0* | 13 | 0 | 0 |
Aug 25 | Tamarack Flat CG | 60 | 11 | 18.3* | 11 | 1 | 9.1 |
Aug 26 | Tuolumne Meadows | 208 | 70 | 33.7* | 68 | 3 | 4.4 |
Sep 24 | Glacier Point | 108 | 33 | 30.6 | 6 | 1 | 16.7 |
Oct 22 | Yosemite Valley | 175 | 34 | 19.4 | 28 | 0 | 0 |
Total | All | 911 | 202 | 22.2 | 164 | 8 | 4.9 |
*Trapping event included overnight hours, which extended the trapping period an additional 12–14 h. CG, campground.