In the early, uncertain days of the coronavirus pandemic, scientists delivered one comforting pronouncement: The virus that caused COVID mutates rather slowly. If that remained true, the virus would ...

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 new study shows how person-to-person variation in antibody immunity plays a key role in shaping which influenza (flu) strains dominate in a population. A new study has shown that person-to-person ...