The National Park Service may expand its warning about a recent outbreak of hantavirus at Yosemite. Park officials are sifting through contact information for the 1,700 people potentially affected, to see if it makes sense to spread the alert internationally as well as domestically. Hantavirus has killed two people and sickened another who visited Yosemite over the summer.
Yosemite Grapples with Hantavirus Outbreak
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