Based on information from the recent Colorado Bat Working Group meeting, Colorado currently has 9 counties with positive WNS tests: Boulder, Douglas, El Paso, Grand, Jefferson, Larimer, Otero, Teller, and Weld. An additional 5 counties have positive Pd results: Baca, Jackson, Montezuma, Pueblo, and Routt. Species affected by WNS here include big brown bat, little brown myotis, fringed myotis, Yuma myotis, long-legged myotis, and Western long-eared myotis. Mexican free-tailed bats have also been found that tested Pd+. Pallid bats may be impacted now also, but the tests so far have been inconclusive.
Nationwide, there are 40 states now with positive WNS tests. The only states that are still Pd negative are Alaska, Hawaii, Nevada, and Florida. There have been some very good results in lab tests with vaccines and with certain fungicides, and the USGS is scaling up to produce a lot more vaccines. However, the challenge is still to test effective field methods to deliver vaccines and / or fungicides. The challenges may be even bigger here in the Rocky Mountains, where many of the bats roost in dispersed trees, talus slopes, and rock crevices, rather than massed together in mines, caves, or buildings.