Diseases, Conditions, Syndromes

Questions and answers about the omicron variant

Americans understandably are concerned about the recent surge of cases of COVID-19 driven by the omicron variant of the coronavirus. Here are answers to some of the more common questions about omicron.

Vaccination

Do I need a vaccine if I've already had COVID-19?

The Centers for Disease Control announced that in most cases, vaccinated adults in the U.S. could start going without masks, even indoors—a long-awaited benchmark to signal a return to a more normal life. But many people ...

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