Omicron and the Winter surge. Plus, Pfizer changes up its vaccine for the littlest of kids.

Omicron may fuel the Winter surge in the U.S. That might be a good thing.

Pfizer is tweaking its vaccine for kids 5 and younger because trials show it's not really working on them.

The pandemic created a wild economy in 2021. What's in store for 2022?

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