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

H5 bird flu, a type of avian influenza, has infected dozens of people in the U.S., and spread to seven states and Canada this year. As more human cases arise, there's deepening worry over whether the ...

A Canadian teenager has been hospitalized with bird flu, the first human case of H5N1 in the current ... [+] outbreak detected in the country. A teenager in British Columbia has been hospitalized ...

The first report of a H5N1 infection in a pig on a backyard farm in Oregon was confirmed by the Centers for Disease Control ...

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

British Columbia health officials are investigating what's believed to be the first human case of H5N1 avian influenza caught in Canada after a teenager tested presumptively positive for the ...

This case comes after several farm workers in southeastern Washington tested positive for H5N1 virus last month. Several of the workers spent time in Oregon while infected, health officials have ...

Five new human cases of H5N1 bird flu have been detected in California. Oregon’s first known human case has been confirmed. Authorities say all cases were transmitted from animals to humans ...

In that case, a household contact also tested positive for H5N1 infection on serology but was not included in the final case count (nor will the Colorado and Michigan workers who tested positive ...

Canada's public health agency has confirmed the first case of H5N1 avian influenza in the country in a B.C. teenager who is in critical condition. In a statement, the Public Health Agency of ...

A teenager in British Columbia is in critical condition after being exposed to H5N1 bird flu. The source of the virus has not been determined. The teen is the first presumptive case of H5N1 bird ...