Outbreaks and emergencies

Human infection with avian influenza A(H7N9) virus

On March 31 China notified WHO of the first human cases of avian influenza A(H7N9). Although human infections with other subgroups of H7 influenza viruses have occurred before, this is the first report of H7N9 cases in humans and causing severe illnesses. The Chinese government has heightened disease surveillance and it is likely that more cases will be identified. At this stage, there is no evidence of sustained human to human transmission. WHO is providing relevant information to governments and the general public through various communication channels, to ensure that information is available and necessary actions are taken to reduce risks associated with this virus.

Contact us

World Health Organization
Western Pacific Regional Office
P.O. Box 2932
1000 Manila
Email: outbreak@wpro.who.int