Add Yahoo as a preferred source to see more of our stories on Google. Decades of research have showed scientists what mutations to watch for in the H5N1 virus. (Callista Images/Image Source/Getty ...

Canadian officials have reported that one of four Canadians returning from a cruise ship with a hantavirus outbreak has a “presumptive positive” test result.

Helen Branswell covers issues broadly related to infectious diseases, including outbreaks, preparedness, research, and vaccine development. Follow her on Mastodon and Bluesky. You can reach Helen on ...

As a Canadian teenager’s condition worsened amid the first presumptive positive test for bird flu in that country in over a decade, health officials were struggling to answer a broader and potentially ...

The avian flu virus isolated from a hospitalized teenager in Vancouver has mutations in key areas that could help the virus spread more easily in humans, scientists say. There is no indication that ...