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Many Americans are still making sense of new CDC guidance that vaccinated people no longer have to wear masks in most indoor settings.
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The public health agency had previously emphasized that masks protect other people from viruses you might expel. The new advice gives a less altruistic reason to wear face coverings.
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How can communities stop coronavirus case surges without crushing the economy? Some scientists say widespread mask wearing may be more than a helpful precaution — it may be the solution.
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Models developed by mathematical epidemiologists project that tens of thousands of lives across the U.S. can be saved by more people wearing face masks.