AdvertisementCOVID-19 Vaccine: Don't Miss 2nd Dose Because Of Scheduling Glitches06:53Download AudioResumeFebruary 16, 2021Allison AubreyfacebookEmailNurse Keith Grant got his second dose of Pfizer's COVID-19 vaccine on schedule from registered nurse Valerie Massaro in January at the Hartford Convention Center — 21 days after his first immunization. (AFP via Getty Images)