Two may have contracted hantavirus while visiting Yosemite

[dipsydoodle]

2. Nope

carried by the deer mouse as opposed to rats.

http://en.wikipedia.org/wiki/Hantavirus

I recall a documentary on the subject. Apparently native americans knew of this long ways back to the extent that an outbreak would cause and entire tribe to move elsewhere. Convenient link here : http://www.examiner.com/article/apocalypic-mysterious-plague-killed-millions-of-native-americans-the-1500s