The Latest Breaking News from Raj Rajnarayanan

“Pirola” JN.1 may be the beginning of a new chapter in the pandemic, some experts said. Now its descendants are spawning—and appear to be on a path to dominance.

This year's winter respiratory disease season was looking to be a bit of a respite from last year's—until JN.1 took off. Now, it's anyone's best guess.

People are asking the wrong question of at-home COVID tests, one expert tells Fortune.

We can, perhaps, breathe a collective sigh of relief—for the moment. But it’s far from time to let our guard down, experts tell Fortune.

Though not always en vogue politically or much fun, it was never not time to mask, many experts contend—not since COVID began circulating widely in 2020, anyway.

COVID is thought to have originated in animals—and even if the lab leak theory is true, animals may have played a role in early transmission of the virus.

Expect peaks this fall and winter not as much as a high wall of cases, experts say.

One driver: the heat.

Cases of Omicron variant XBB are mounting in China, forming a new wave expected to crest around 65 million cases a week by the end of June. While COVID remains a global threat, it's time to "go back for regular check-ups" and ensure that lives saved by COVID precautions during…