Avian Influenza A (H7N9) Virus in China

On April 2, 2013, the World Health Organization (WHO) reported 3 human infections with a new influenza A (H7N9) virus in China. As of April 25, 2013, a total of 108 cases have been laboratory confirmed with influenza A (H7N9) virus in China, including 22 deaths. This virus has not been detected in people or birds in the United States. No person-to-person spread has been found at this time, and the reported cases are not linked to each other.

This H7N9 virus is an avian influenza virus. Human infections with avian influenza are rare, but have occurred in the past. However, this is the first time that this avian influenza subtype (H7N9) has been found in people.

Clinicians should consider the possibility of novel influenza A (H7N9) virus infection in people with respiratory illness and an appropriate travel or exposure history.

For additional information on Avian Influenza A (H7N9) Virus, please visit www.ndflu.com/H7N9/default.htm or http://www.cdc.gov/flu/avianflu/h7n9-virus.htm.

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