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 ...

Hopefully, you have already received your seasonal flu vaccine this year. These shots are highly effective at preventing illness, ultimately lowering the spread of the virus throughout the population.

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 ...