The committee that decides who gets the coronavirus vaccine first meets virtually Tuesday as officials prepare for distribution that could potentially come within two weeks. Look for discussion of two questions: Where should people in long-term care facilities be in the vaccine line and the power of states and governors to shift priorities for who gets immunized first. The Advisory Committee on Immunization Practices is an independent group convened by the Centers for Disease Control and Prevention to offer advice on who should get specific vaccines and when. It typically deals with less time-sensitive questions such as what age people should get the shingles vaccine (50 and over) or whether adults need a whooping cough booster (under discussion.) When a pediatrician says, "It's time for the second polio immunization," it's based on ACIP recommendations.