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Immunology

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Tumbling COVID-19 case counts have some schools around the U.S. considering relaxing their mask rules, but deaths nationally have been ticking up over the past few weeks, some rural hospitals are showing signs of strain, and cold weather is setting in.

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WASHINGTON (AP) — The U.S. on Thursday donated its 200 millionth COVID-19 shot to help vaccinate the rest of the world, the White House announced. The Biden administration aims to lead a global vaccination campaign even as it rolls out boosters for domestic use, which critics say diverts doses from those who are in greater need around the world.

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WASHINGTON (AP) — U.S. regulators on Wednesday signed off on extending COVID-19 boosters to Americans who got the Moderna or Johnson & Johnson vaccine and said anyone eligible for an extra dose can get a brand different from the one they received initially.

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Parents tired of worrying about classroom outbreaks and sick of telling their elementary school-age children no to sleepovers and family gatherings felt a wave of relief Thursday when Pfizer asked the U.S. government to authorize its COVID-19 vaccine for youngsters ages 5 to 11.

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