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Gastrointestinal infection are often caused by the Norwalk virus or one of its many relatives. These viruses are second only to the common cold in the occurrence of viral illnesses in the US.
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Copyright © 1997-2008 HealthBoard.com
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Gastrointestinal infection are often caused by the Norwalk virus or one of its many relatives. These viruses are second only to the common cold in the occurrence of viral illnesses in the US.
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Copyright © 1997-2008 HealthBoard.com