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.

Health officials in British Columbia have reported the first presumptive case of H5 avian influenza in a human in Canada.

British Columbia’s health ministry says the first suspected human case of avian influenza has been detected in Canada. A teenager in the province has tested positive for the virus — also called bird flu — which can be fatal.