B.C. health authorities have announced the first case of a human avian flu infection acquired in Canada, with the teenage patient in critical condition in hospital.
A Canadian teenager who is in critical condition after contracting H5N1 birdflu was infected with a version ... had recently returned to Canada from China and was believed to have been infected ...
Since H5N1 birdflu was first identified in 1996 in China, the virus has spread widely ... allowing genes to swap material and form a new, more dangerous virus that can more easily infect ...