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.

Experts and health authorities say that while the risk of human infection with the H5N1 strain of avian influenza remains low, people should avoid contact with sick or dead birds.

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.