“…Vaccine-specific changes in the 2021 child and adolescent immunization schedule for children and adolescents aged 18 years or younger include new or updated ACIP recommendations for influenza vaccine ( 4 ) meningococcal serogroups A, C, W, and Y (MenACWY) vaccines ( 5 ), and COVID-19 vaccines ( 1 , 2 ). Changes also include clarification of the recommendations for diphtheria and tetanus toxoids and acellular pertussis vaccine (DTaP), Haemophilus influenzae type b vaccine (Hib), hepatitis A vaccine (HepA), hepatitis B vaccine (HepB), human papillomavirus vaccine (HPV), pneumococcal vaccines (PCV13 and PPSV23), measles, mumps, and rubella virus vaccine (MMR), tetanus toxoid, reduced diphtheria toxoid, and acellular pertussis vaccine (Tdap), and varicella vaccine (VAR).…”