Cases of H5N1 bird flu in U.S. dairy and poultry workers have largely been mild. However, a new case in a British Columbia teenager has experts worried.

A Canadian teenager is hospitalized in critical condition with suspected bird flu, health officials reported Tuesday.

This marked "the first detection of a presumed human case" of H5 in Canada, authorities in British Columbia said. View on euronews

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.

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.

A Canadian teen is severely ill with what is believed to be bird flu. The teen is not known to have had any contact with infected animals.

A teenager in British Columbia, Canada has been hospitalized with a presumed case of H5N1 bird flu, the first detected human case in the country in the current outbreak.

Amid an ongoing outbreak of bird flu in American dairy herds and poultry flocks, Canadian officials have announced

Initial testing had indicated the teenager’s infection was from bird flu and was confirmed in further testing, the Public Health Agency of Canada said in a statement. The teen has been hospitalized in Vancouver since Friday and was reported in critical condition on Tuesday.

It is not known how the teen contracted bird flu, according to British Columbia health officials A teenager in British Columbia, Canada, is in critical condition after contracting the first presumptive case of bird flu in the country,