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Avian Influenza Outbreaks

This website is archived and is no longer being maintained or updated. For updated information on avian influenza, see the CDC Avian Influenza website and the World Health Organization (WHO) Avian Influenza Situation Update page.

Outbreaks of highly pathogenic avian influenza A (H5N1) associated with illness and death in humans have occurred in Asia since late 2003. In the United States, different avian influenza viruses caused outbreaks among poultry in 2003 and 2004, and one human infection in 2003.

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• Influenza (Flu)

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