News & Perspective

Dec 14, 2016

Dec 14, 2016
Farm geese

Spread of avian flu noted in China, Korea, Europe

As H5N6 spreads in parts of Asia, the H5N8 strain hits more farms in Hungary, Poland, and France.

Aug 18, 2006

Aug 18, 2006

WHO changes H5N1 strains for pandemic vaccines, raising concern over virus evolution

(CIDRAP News) – The World Health Organization (WHO) today changed the H5N1 avian influenza strains recommended for candidate vaccines for the first time since 2004, causing some experts to question how far the virus has evolved.

The WHO's new prototype strains, prepared by reverse genetics, include three new H5N1 subclades.