Two years into the COVID-19 pandemic, researchers wanted to know how well human beings are holding up against an onslaught of new variants. But, to figure out if our immune systems are up to the task ...

There are eight different ways people experience long COVID symptoms, according to a new study from the National Institutes ...

Since the emergency phase of the COVID pandemic has ended, researchers have been studying the long-term consequences of a ...

As evidence mounts that the omicron variant is less deadly than prior COVID-19 strains, one oft-cited explanation is that viruses always evolve to become less virulent over time. The problem, experts ...

WASHINGTON -- Many of the world's richest countries have spent the past year hoarding coronavirus vaccines, buying up enough doses to vaccinate their populations several times over and consistently ...

A new COVID-19 strain, referred to as NB.1.8.1 or "Nimbus," first appeared in the U.S. sometime near the end of April and is currently the dominant variant in the U.S. The new variant is said to be ...