It's not clear how the British Columbia teenager picked up the virus, which has been detected recently in wild birds and poultry in the province, a health official said.

In what is believed to be Canada's first human case of bird flu, a teenager is in a British Columbia children's hospital in critical condition with a presumptive case of the virus, the CBC reports. Authorities say the unnamed teen developed symptoms Nov.

A Canadian teenager infected with bird flu — that country’s first case involving a locally acquired infection — is in critical condition and experiencing difficulty breathing, health officials said Tuesday.