Swine Flu: Why Are We Worried? Video

Acting Surgeon General Rear Admiral Steven K. Galson, M.D. joins The Doctors and explains why health officials are worried about the swine flu virus.
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Well the reason we are worried about this virus is that the world population hasn't been exposed to it before. It's a new virus, so we don't have any natural immunity. We haven't been immunized before against it. So there is a potential for a lot of people getting sick. So far as you've heard we have just passed the 100 cases mark in the US over the weekend, and we are watching carefully. We haven't had a pandemic actually declared yet, but that's the real reason that we were worried about it, is that we haven't seen this virus before.

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