The C.D.C. said on Thursday that Americans could choose a booster dose of a vaccine different from the one they had initially received.The C.D.C. said on Thursday that Americans could choose a booster dose of a vaccine different from the one they had initially received.Coronavirus (2019-nCoV), Vaccination and Immunization, Centers for Disease Control and Prevention, Moderna Inc, Johnson & Johnson, Pfizer IncRead More
