When a virus mutates, the world usually finds out the hard way. Variants of influenza and SARS-CoV-2 can slip past vaccines ...

The ancestor of the virus that causes COVID-19 left its point of origin in Western China or Northern Laos just several years before the disease first emerged in humans up to 2,700 kilometers away in ...

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 ...