Viruses are puzzling. These tiny parasites aren’t really alive, but they aren’t inactive either. They’ve flourished and mutated throughout the years, achieving astounding rates of diversity yet are ...

For a small group of people scattered across the world, living with a rare immune condition comes with an unexpected twist: they appear to be naturally shielded from almost every virus known to infect ...

When the virus that caused the COVID-19 pandemic first emerged, many scientists thought it would evolve slowly, like other coronaviruses. But that was one of the first big surprises from the virus ...