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H7N9 Influenza A

Disease Information

Human infections with a new avian influenza A (H7N9) virus were first reported in China in March 2013. Most of these infections are believed to result from exposure to infected poultry or contaminated environments, as H7N9 viruses have also been found in poultry in China. While some human H7N9 cases have been mild, most patients have developed severe respiratory illness, with about one-third resulting in death.

There is no evidence of sustained person-to-person spread of the virus, and most people who were infected have had known contact with poultry. There have been no cases detected in the United States.

Influenza viruses constantly change, and it’s possible that this virus could change enough to spread among people. People can protect themselves and others from influenza infection by washing their hands, covering their mouths when they cough or sneeze, and staying home when sick.

For more information about influenza, both novel and seasonal, see the Public Health Division Influenza page.

Disease Reporting

Healthcare providers and clinical laboratories are required by law to report suspect cases of novel influenza strains like H7N9 to local health departments immediately, day or night. If you cannot reach your local health department, call 971-673-1111 to reach the state health department doctor on call.

For Healthcare Providers

For Local Health Departments

See Also