Have you ever wondered why you have to get a flu shot every year, but some vaccines are one-and-done? It all has to do with how and how fast viruses evolve - and that depends on mutation rates.

Experts consulted by Newsweek say hantavirus is unlikely to spark a pandemic because it transmits poorly between people.

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 ...

Early in the beginning of the COVID-19 pandemic, scientists predicted the SARS-CoV-2 virus would mutate slowly. They were wrong. Hundreds of... What the COVID-19 pandemic tells us about how viruses ...

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 ...