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Uploaded by CBS on Apr 30, 2009
The Centers for Disease Control is trying to find a vaccine for the H1N1 virus. Dr. Jon LaPook reports on their progress and Dr. Jennifer Ashton tells Katie Couric about symptoms of this flu.
News & Politics
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wat country john?
actiondy 2 years ago
why the heck does this video is not available in my country?i would like to have a good answer
johnpatinho 2 years ago
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wat country john?
actiondy 2 years ago
why the heck does this video is not available in my country?i would like to have a good answer
johnpatinho 2 years ago