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.

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.

OTTAWA (Reuters) -Canada has detected its first presumptive case of H5 bird flu in a person, a teenager in the western province of British Columbia, health officials said on Saturday. The teenager likely caught the virus from a bird or animal and was receiving care at a children's hospital, the province said in a statement.