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This decision to appeal comes just two days after U.S. District Judge Kathryn Kimball Mizelle ruled against the federal mask mandate.
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The Biden administration will continue to require travelers to wear masks on planes and other forms of public transport,.
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Anthony Fauci walks through what he predicts the BA.2 subvariant will do in the U.S., whether we will need boosters every four months and his advice for masking at indoor events.
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The BA.2 strain now accounts for more than half of all coronavirus infections nationwide, the CDC estimates. Although it's fueling a surge in Europe, the variant doesn't appear to make people sicker.
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The Centers for Disease Control and Prevention held only two telebriefings in 2021. That lack of transparency has prompted criticism — and a pledge from director Dr. Rochelle Walensky to be more open.
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The new recommendation for adolescents age 12-17 came hours after a panel of CDC advisers voted in favor of it. The boosters should be given five months after initial immunization.
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Those who contracted COVID-19 can end their isolation after five days while continuing to wear a well-fitting mask for an additional five days, according to the agency.
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The move to shorten the Pfizer booster interval comes as the U.S. shatters daily case records. The recommended interval for those who received Moderna or Johnson & Johnson vaccines has not changed.
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Cutting the isolation for positive cases to five days could lead to more infections if people don't take masking seriously. A testing requirement would have made the policy safer, experts say.
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People who test positive need to isolate themselves for 5 days if they don't show symptoms. The change reflects "what we know about the spread of the virus" and vaccine protection, the CDC chief says.