The Department of Health and Human Services’ Maine Center for Disease Control and Prevention (Maine CDC) is issuing this Health Alert Network (HAN) Health Advisory to provide immunization recommendations based on guidance from the American Academy of Pediatrics (AAP), American Academy of Family Physicians (AAFP), and American College of Obstetricians and Gynecologists (ACOG) following the September 18 to 19 meeting of the Advisory Committee on Immunization Practices (ACIP). The Maine CDC, along with the American Academy of Pediatrics, is maintaining its existing guidance that the Measles, Mumps, Rubella and Varicella (MMRV) vaccine remain an option for children under 4 years of age, and strongly supports the current universal hepatitis B vaccine recommendations for giving newborns a dose of hepatitis B vaccine within 24 hours of birth. The Maine CDC issued COVID-19 immunization recommendations and a standing order for the 2025-2026 COVID-19 vaccine products (Pfizer, Moderna, and Novavax) on September 12, 2025.