Yosemite workers may be surveyed for mouse virus

YOSEMITE NATIONAL PARK, Calif. (AP) — California public health officials want to survey workers at Yosemite National Park to determine whether they were exposed to a deadly mouse-borne virus, a park spokesman said Thursday.

The California Department of Public Health recently proposed to take a voluntary survey of workers to contribute to the park's understanding of the rare virus and the recent disease cluster, Yosemite National Park spokesman John Quinley said.