H5N1 Pandemic?

H5N1 human pandemic 'possible'

Researchers say the H5N1 bird flu virus could mutate into a form that could be spread rapidly between humans.

• Fergus Walsh: Controversial work
• Research censorship 'problematic'
• Editor's concern over bird flu

Pandemic? How Mutant Bird Flu Goes Airborne

A second study adds to the concern that with a handful of genetic changes, the H5N1 virus could become a global pandemic. Read more