A teenager in British Columbia who is being treated in the critical care unit was confirmed to have been infected with the bird flu virus.

British Columbia health officials have yet to identify a likely source of the infection, though none of the teen's contacts have tested positive for the virus so far.

Cases of H5N1 bird flu in U.S. dairy and poultry workers have largely been mild. However, a new case in a British Columbia teenager has experts worried.

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

Health officials have announced six more H5N1 bird flu infections in humans: five in California and the first known case in Oregon.

A teenager diagnosed with bird flu in British Columbia is the first domestically acquired human case of H5N1 avian influenza, the Public Health Agency of Canada says. Since Influenza A or flu viruses are named after the animal where they are most commonly found,

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

Amid confirmation that a B.C. teen hospitalized last week is the first person to acquire H5N1 avian flu in Canada, health experts say increased influenza surveillance, early detection and vaccine preparedness are key to guarding against potential spread of the virus.

Based on current evidence, the risk of avian influenza infection for the public remains low. The risk of bird flu infection is higher for those who have unprotected exposure to infected animals, PHAC said.