Bird flu virus mutates into a strain more infectious to humans - The Independent 6th October 2007

The bird flu virus H5N1 has mutated into a form that makes it more infectious to humans, increasing the risk of a human pandemic, researchers have found. The changes, which only affect the virus circulating in Europe and Africa, are worrying although they have not yet transformed it into a pandemic strain, Yoshihiro Kawaoka, of the University of Wisconsin-Madison, who led the research, said.

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