Swine flu outbreak likely to continue, officials say

As numbers rise daily, the mechanism of the virus remains shrouded

By Nathan Seppa, 18:39 PM April 27, 2009

Even as public health data on the new swine flu outbreak pour in, the biological mechanism by which the virus sickens people remains poorly understood, scientists say.

Forty cases of swine flu have been confirmed in five U.S. states, says Richard Besser, acting director of the Centers for Disease Control and Prevention in Atlanta. But only one U.S. case has led to hospitalization, and no one in the United States has died. The cases appeared in New York, Texas, Kansas, Ohio and California, B...

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