That's the way one scientist puts it — referring to how infected wild birds survive long enough to spread it to birds and ...

Suspicions that there may be more bird flu going around undetected were backed by a voluntary serosurvey among veterinary ...

Opens in a new tab or window Suspicions that there may be more bird flu going around undetected ... though one person in Louisiana died with severe respiratory symptoms in January.

"We've gone from this concept of dead birds don't fly to this new virus that seems to be a bit more like dead bird flying," explains ... virus could become more severe. At the moment, the virus ...

And with each genetic change, there is the chance the virus could become more severe. At the moment ... virus seems to be a bit more like dead bird flying, right? EMANUEL: So a bird gets infected ...