Joyce Nunez (right) administers the Pfizer/BioNTech booster vaccine to Penn Dental Medicine third year Alethia Li at Penn's booster clinic at the Gimbel Gymnasium on Dec. 15, 2021.
Joyce Nunez (right) administers the Pfizer/BioNTech booster vaccine to Penn Dental Medicine third year Alethia Li at Penn's booster clinic at the Gimbel Gymnasium on Dec. 15, 2021.