http://www.kqed.org/.stream/anon/radio/quest/2009/09/2009-09-21-quest.mp3
Why do some people get severely sick from swine flu and others barely feel it? As flu season ramps up, scientists at UCSF's Viral Discovery Center are racing to learn more about the 2009 H1N1 virus, including how it's evolving, and whether our current treatments will remain effective.