Fourteen percent of deer mice in California's Yosemite National Park carry the Sin Nombre strain of hantavirus, which infected 10 people and killed three in the park last year, and Yosemite has taken precautionary measures to help prevent another outbreak. In addition to increased cleaning of lodgings and warnings posted, Yosemite also tore down 91 of the tent cabins that harbored the mice.

Related Summaries