http://www.discoverynews.com
The H1N1 swine flu virus has become a pandemic.
James Williams takes a look at where the swine flu originated and what happens to the virus once it gets inside our bodies.
watch
the video
The H1N1 swine flu virus has become a pandemic.
James Williams takes a look at where the swine flu originated and what happens to the virus once it gets inside our bodies.
watch
the video
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