Moderna has asked federal regulators to authorize booster shots of its coronavirus vaccine for all adults, a request that the Food and Drug Administration could grant as early as this week along with a similar request from Pfizer, according to
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AstraZeneca asks the F.D.A. to authorize an antibody treatment to prevent Covid-19.
AstraZeneca said on Tuesday that it had asked the Food and Drug Administration to grant emergency authorization for a long-acting antibody treatment to prevent Covid-19 in people who are at high risk of the disease. If authorized, it would become