CDC: New version of stomach bug causing US illness

The new strain may not be unusually dangerous; some scientists don't think it is. But it is different, and many people might not be able to fight off its gut-wrenching effects. (AP file) Photo by
The new strain may not be unusually dangerous; some scientists don't think it is. But it is different, and many people might not be able to fight off its gut-wrenching effects. (AP file) Photo by
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