News & Perspective

Apr 14, 2009

Apr 14, 2009

Surprising diversity found in H5N1 in Asian chickens

(CIDRAP News) – H5N1 influenza viruses found in chickens seized at Vietnam's border with China in 2008 show a surprising level of genetic diversity, suggesting that the viruses are evolving rapidly and raising questions about disease surveillance and the effectiveness of prepandemic H5N1 vaccines, according to a team of Vietnamese and US scientists.