| The Food and Drug Administration on Wednesday authorized a booster dose of Pfizer and BioNTech's coronavirus vaccine for people over 65 years of age and those who are at high risk of severe COVID-19. The anticipated decision follows a back-and-forth meeting of agency advisers last Friday, during which experts opposed clearing a third shot more broadly for anyone over 16 years old, as Pfizer had requested. But the FDA's clearance also covers individuals whose work frequently exposes them to the virus, such as healthcare workers and teachers. This is breaking news. Read our full story for further details and analysis. | 
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