During the Biden administration, there were renewed arguments over the proper usage of booster vaccines. In August 2021, Woodcock, now the acting director of the FDA, agreed that Americans should start receiving boosters. Resenting yet another bout of political interference in their scientific decisions, the two leading officials in the vaccines office of the center headed by Marks resigned. They were not against boosters in principle, but they felt such shots were not yet needed for most vaccinated people and should, at that time, be reserved for high-risk populations or those, including
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