10,000 tourists who stayed in cabins at Yosemite National Park recently might have been exposed to the deadly mouse-borne Hanta Virus. So far , Hanta has made 6 of the tourists ill. Hanta Virus is caused by inhaling the dried feces of infected mice. It is also carried by prairie dogs.

The Park Service is frantically writing and emailing the people who stayed in those cabins this summer, telling them to check in with their doctors.
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