News & Perspective

Aug 29, 2011

Aug 29, 2011

FAO warns of possible H5N1 resurgence in birds

(CIDRAP News) – The United Nations Food and Agriculture Organization (FAO) expressed renewed concern today about H5N1 avian influenza, warning of a "possible major resurgence" of bird outbreaks and saying that a vaccine-evading strain has emerged in Vietnam and China.

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.