Which immunization is typically administered at 12 months of age?

At 12 months of age, the measles, mumps, and rubella (MMR) vaccine is typically administered as part of routine childhood immunizations. This vaccine is important because it helps provide immunity against these three contagious viral diseases, which can have serious complications, especially in young children. The MMR vaccine is usually given in two doses; the first dose is administered between 12 and 15 months of age, and the second dose is given between 4 and 6 years of age.

The other immunizations listed have different typical administration schedules. The DTaP vaccine, which protects against diphtheria, tetanus, and pertussis, is commonly given at 2, 4, 6, and 15-18 months, and again at 4-6 years. The Hepatitis B (Hep B) vaccine is recommended for infants at birth, 1-2 months, and 6-18 months, with the first dose administered shortly after birth. The inactivated polio vaccine (IPV) is usually given at 2, 4, and 6-18 months, and again at 4-6 years. Thus, MMR is uniquely positioned in the immunization