Volume 22, Number 12—December 2016
CME ACTIVITY - Synopsis
Investigation of and Response to 2 Plague Cases, Yosemite National Park, California, USA, 2015
Table 1
Yersinia pestis transmission risk assessments in and around Yosemite National Park, California, USA, August–October 2015*
Site | Association | Name | Jurisdiction | Elevation, m | Assessment activity* | Y. pestis detection |
---|---|---|---|---|---|---|
1 | Patient 1 visited | Rainbow Pool Day Use Area | Stanislaus National Forest | 850 | V, B | None |
2 | Patient 1 visited | Crane Flat CG | Yosemite National Park | 1,890 | V, B, T, C | Serology +, flea pool + |
3 | Patients 1 and 2 visited | Yosemite Valley | Yosemite National Park | 1,220 | H, V, T, C | None |
4 | Patient 2 visited | Glacier Point | Yosemite National Park | 2,190 | V, B, T | Serology + |
5 | Patient 2 visited | Sentinel Dome | Yosemite National Park | 2,470 | V, B | None |
6 | Patient 2 visited | Vernal Falls | Yosemite National Park | 1,510 | V, B | None |
7 | Patient 2 visited | Bass Lake | Sierra National Forest | 1,040 | H | None |
8 | Patient 2 visited | Lewis Creek | Sierra National Forest | 1,280 | V, B | None |
9 | Patient 2 visited | Nelder Grove | Sierra National Forest | 1,640 | V, B | None |
10 | Expanded investigation | White Wolf CG | Yosemite National Park | 2,400 | V | None |
11 | Expanded investigation | Porcupine Flat CG | Yosemite National Park | 2,480 | V | None |
12 | Expanded investigation | Tamarack Flat CG | Yosemite National Park | 1,940 | V, B, T | Serology + |
13 | Expanded investigation | Hodgdon Meadows CG | Yosemite National Park | 1,450 | V | None |
14 | Expanded investigation | Tuolumne Meadows | Yosemite National Park | 2,620 | V, B, T, C | Serology +, flea pool +, carcass + |
15 | Expanded investigation | Crane Flat–NatureBridge Campus | Yosemite National Park | 1,890 | V | None |
16 | Expanded investigation | Wawona | Yosemite National Park | 1,220 | C | None |
17 | Expanded investigation | Bridalveil Creek CG | Yosemite National Park | 2,130 | V | None |
*B, burrow swabbing; C, carcass collection; CG, campground; H, historical review; T, rodent trapping; V, visual assessment; +, positive for Y. pestis.