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February 1, 2021


When will the Covid-19 epidemic end? Here are the good, bad, and ugly scenarios.

What you need to know about CDC's new face mask requirements

'This is a big deal': A new drug targets a long-evasive mutation in lung cancers

Weekly review: Is it safe to fly? A recent in-flight outbreak shows the risks (and how to reduce them).

Around the nation: How a snowy traffic jam became an impromptu Covid-19 vaccination site

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