Search SearchEmail this pageSite Map
Traditional Chinese Simplified Chinese
Home
News
Information
HK Community
Healthcare Professionals
Trade
Teachers, Students and Parents
Tourists and Travellers
Hotlines
Central Health Education Unit and Others
Related Links
Contact us
GovHK
Level Double-A conformance, W3C WAI Web Content Accessibility Guidelines 2.0

What is avian flu?

Avian influenza is caused by those influenza viruses that mainly affect birds and poultry, such as chickens or ducks. These avian influenza viruses do not usually infect humans. However, human cases (mainly due to influenza A H5N1 and H9N2 viruses) have been identified in Hong Kong and other parts of the world.

 

 

2004 © | Important notices Last revision date: February 18, 2011