[PHOTO: Pseudogymnoascus destructans isolates]
A single silver-haired bat (Lasionycteris noctivagans) submitted to the Washington Department of Health for rabies testing and subsequently transferred to the National Wildlife Health Center was positive for Pseudogymnoascus destructans (Pd) by molecular testing (real-time PCR). This bat was originally collected during the same month and in the same county as the Washington bat with previously confirmed WNS. Histological analysis indicated that this second Pd-positive bat from Washington lacked lesions indicative of WNS. However, detection of Pd on this silver-haired bat by PCR is consistent with previous reports for this species in the eastern U.S. and suggests that silver-haired bats may be a carrier of the fungal pathogen. Unlike little brown bats, silver-haired bats do not seem to suffer mortality from WNS.