Teen in critical condition with Canada's first presumptive human case of bird flu

FILE - This colorized electron microscope image released by the National Institute of Allergy and Infectious Diseases on March 26, 2024, shows avian influenza A H5N1 virus particles (yellow), grown in Madin-Darby Canine Kidney epithelial cells (blue).

A teenager is in critical condition in a British Columbia children's hospital, sick with Canada's first presumptive human case of avian influenza.