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What FDA approval of Pfizer’s Covid vaccine for 12-15 year olds could mean for herd immunity

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The FDA has approved the Pfizer Covid-19 vaccine for children 12-years-old and up, a move that could make millions more shots available. Former pandemic and emerging threats coordinator under President Obama, Dr. Mario Ramirez, joins News NOW to explain some parent’s safety concerns and what the FDA’s decision could mean for achieving herd immunity.