Diseases, Conditions, Syndromes

Fully vaccinated people can gather without masks, CDC says

Fully vaccinated Americans can gather with other vaccinated people indoors without wearing a mask or social distancing, according to long-awaited guidance from federal health officials.

Diseases, Conditions, Syndromes

US rushes to catch up in the race to detect mutant viruses

Despite its world-class medical system and its vaunted Centers for Disease Control and Prevention, the U.S. fell behind in the race to detect dangerous coronavirus mutations. And it's only now beginning to catch up.

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