Table 2.

US Recommendations: Measles, mumps, and rubella (MMR) vaccination [23].

Population groups	Vaccination recommendations
Children between 12 to 15 months of age	First dose of the MMR vaccine
Children between 4 to 6 years of age	Second dose of the MMR vaccine (the second dose can be given earlier if given after at least 28 days after the first dose)
Children between 12 months and 6 years of age	The measles, mumps, rubella, and varicella (chickenpox) (MMRV) vaccine as a single dose
Students in higher educational institutions without presumptive evidence of measles virus immunity	Two doses of MMR vaccine, separated by at least 28 days
Adults without presumptive evidence of measles virus immunity	A single dose of MMR vaccine
Adults without presumptive evidence of measles virus immunity who are at increased risk of infection: students at higher education institutions; healthcare personnel; international travelers	Two doses of MMR vaccine, separated by at least 28 days
Non-pregnant women of childbearing age who do not have presumptive evidence of immunity	At least a single dose of MMR vaccine
Women who are breastfeeding and do not have presumptive evidence of immunity	At least a single dose of MMR vaccine while breastfeeding, as the vaccine is not passed to the baby in breast milk
Contraindications for MMR vaccination
Allergy to the vaccine components Pregnancy Immune suppression (including HIV/AIDS) Coagulopathies Current chronic infection (including TB) Recent history of receiving another live vaccine in the previous four weeks Recent transfusion of blood products

Modified from: Centers for Disease Control and Prevention (CDC), 26 January 2021 [23].