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

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

Authorities in Hawaii are warning residents who attended a local pet fair to watch for symptoms of avian influenza after a ...

A teenager diagnosed with bird flu in British Columbia is the first domestically acquired human case of H5N1 avian influenza, ...

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

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

A Canadian teenager infected with bird flu — that country’s first case involving a locally acquired infection — is in ...

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 ...

A teenager in British Columbia, Canada has been hospitalized with a presumed case of H5N1 bird flu, the first detected human ...

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

A teenager in Canada, hospitalized with the country's first case of the H5N1 bird flu, is in critical condition. Health ...