Pfizer Announces Vaccine Safe and Effective for Children Ages 5 to 11

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In this Dec. 15, 2020, file photo, a droplet falls from a syringe after a person was injected with the Pfizer COVID-19 vaccine at a hospital in Providence, R.I.
( David Goldman / AP Photo )
Produced by Meg Dalton
GBH PRX WNYC Studios