Government

What the science says about lifting mask mandates With COVID rates dropping and vaccinations on the rise, the United States and other places are removing some requirements for face coverings. Are they moving too fast? Lynne Peeples nature

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No vaccine provides perfect protection, and so-called breakthrough infections after coronavirus vaccination are rare and unlikely to lead to serious illness. Federal health officials have told fully vaccinated people they no longer need to wear masks or maintain social distance because they are protected, nor do they need to be tested or quarantine after an exposure, unless they develop symptoms.

Now, the Centers for Disease Control and Prevention has stopped investigating breakthrough infections among fully vaccinated people unless they become so sick that they are hospitalized or die.