The patient had recently visited China and does not pose a risk to the public, officials said.
The person was never sick enough to need to be hospitalized, and the strain does not spread easily between people.
The B.C. resident returned to Canada on Jan. 12 from China and began feeling ill on Jan. 14.
Dr. Gregory Taylor, Canada's chief public health officer, said N7N9 is not the same is regular flu. There is no evidence of human to human transmission.