After Delta and other COVID variants, Omicron took the world by storm and quickly accounted for nearly all COVID-19 cases around the world. Now, there's a subvariant of the Omicron variant.

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The US Food and Drug Administration (FDA) is changing the way a COVID-19 treatment can be used.

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The Centers for Disease Control and Prevention (CDC) has been making some changes to its school recommendations during the pandemic.

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The Omicron variant of COVID-19 is tearing across the United States and driving case numbers to record highs. Here's what health officials say will fight this fast-moving variant.