Bookmark Health Cause of H5N1 Avian Flu Infection in B.C. Teen Remains a Mystery by Olawunmi Sola-Otegbade November 26, 2024 by Olawunmi Sola-Otegbade November 26, 2024 Cause of H5N1 Avian Flu Infection in B.C. Teen Remains a Mystery B.C. health officials are still working to determine how a teenager contracted the H5N1 strain of avian influenza, …