With 46 U.S. cases and alarming signs of the virus crossing species, experts warn of unpredictable risks if human-to-human ...

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

The first presumed human case of avian influenza (H5N1, or bird flu) has been reported in Canada. An infectious disease ...

Although activity is still considered minimal, cases have ticked up a notch compared to the week before. One business owner ...

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 ...

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

A teen in Canada may be the first person to catch an H5 bird flu virus within the country. Health officials are now working ...

Canada has reported H5N1 bird flu in wildlife and domestic birds. This year, there have been at least 24 reports of the virus ...

It's not clear how the British Columbia teenager picked up the virus, which has been detected recently in wild birds and ...

There have been dozens of confirmed human cases of bird flu in the U.S. this year. Experts discuss the symptoms, risks and ...