Viruses evolve quickly mainly because of how they replicate and mutate. Unlike cells, viruses must invade a host cell and hijack its machinery to copy themselves, often producing huge numbers of new ...

As the seasonal flu picks up, there are even more opportunities for the bird flu to acquire mutations as the different influenza viruses mix. A 13-year-old girl in British Columbia who was ...

A 13-year-old girl in British Columbia who was hospitalized with bird flu for several weeks late last year harbored a mutated version of the virus, according to a report published this week in the New ...