Outbreaks and emergencies

Human Infection with Avian Influenza A(H7N9)


Situation update as of 21 April 2014

During the reporting period 11 April to 18 April 2014, 9 cases (1 death) of human infection with avian influenza A (H7N9) virus were reported from mainland China and Hong Kong SAR, China in the Western Pacific Region. Among the 9 cases, the median age was 70 years, ranging from 30-85 years, six cases were male.

Map below shows the total number of cases of human infection with avian influenza A(H7N9) virus by provinces/municipality/SAR in China during the reporting period 11 April to 18 April 2014.

To date, there has been no evidence of sustained human-to-human transmission. It is expected that there may be further sporadic cases of human infection with the virus in affected and possibly neighbouring areas. Affected provinces and municipalities continue to maintain surveillance and response activities.

WHO does not advise special screening at points of entry with regard to this event, nor does it recommend any travel restrictions be applied. WHO continues to work closely with national authorities and technical partners to gain a better understanding of this disease in humans and will continue to provide updated information as the situation evolves.

For more information on human infection with avian influenza A(H7N9) virus, visit:


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