Canada has also just reported its first known case of bird flu in humans, a teenager who is currently in a critical condition ...

In 2009, H1N1 bird flu caused the first global flu pandemic in 40 years, with the first infections detected in California.

Bird flu continues to spread across the U.S., with new infections in Hawaii and continued human outbreaks in California.

California health officials reported Tuesday that a child in Alameda Co. has been infected with bird flu; source unknown.

A teenager in Canada is critically ill with the country's first human case of H5N1 bird flu. Health officials aren't sure how ...

British Columbia health officials have yet to identify a likely source of the infection, though none of the teen's contacts ...

A Canadian teenager is currently in critical condition after contracting a suspected case of H5N1 bird flu, a British ...

A teenager has been left in critical condition after contracting the first presumptive human case of avian influenza in ...

Canadian health officials have confirmed bird flu in a British Columbia teen. The Public Health Agency of Canada said ...

A British Columbia teen who contracted Canada's first known human case of H5 bird flu has deteriorated swiftly in recent days ...

A teenager in British Columbia was hospitalized in critical condition with the disease, and officials were working to find ...

The H5N1 virus that infected a Canadian teen appears not to have spread, but it shows signs of mutation that makes flu ...