A nurse prepares doses of the Pfizer vaccine during a COVID-19 vaccination event at Josephine’s Southern Cooking in Chatham, Illinois, Dec. 30, 2021. Brian Cassella | Tribune News Service | Getty Images The Food and Drug Administration is weighing revoking its authorization of Pfizer‘s Covid-19 vaccine for healthy children under the age of 5, the drugmaker confirmed to CNBC on …
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