Claudia Mitchell couldn't breathe. The usually bubbly schoolteacher had just visited her doctor, who tested her for swine flu. It was fall 2009, at the height of the H1N1 outbreak. Mitchell had a fever, a headache and a sore throat, and she felt so weak that four days earlier, she'd missed Thanksgiving dinner, unable to rouse herself from a heap on the couch. Her doctor soon called with the results of the... More >>>