Efforts to contain the virus are falling short. A teenager in Canada is in critical condition after an unexplained infection.

B.C. health officials say they still don't know how a teenager became infected with the H5N1 strain of avian flu but say no ...

In the 2009 swine flu pandemic, multiple reassortment events in pigs and birds led to the novel H1N1 virus strain, which led ...

Provincial health officer Dr. Bonnie Henry said during a press conference on Tuesday that a teen remains in critical condition in B.C.'s Children's Hospital with H5N1 avian flu. Henry said one ...

B.C. provincial health officer Dr. Bonnie Henry said the teen infected with H5N1 avian flu remains in critical condition in ...