Who should receive MMR vaccine?
The principal strategy to prevent mumps is to achieve and maintain high immunization levels. The Advisory Committee on Immunization Practices (ACIP) recommends that all preschool-aged children at or greater than 12 months of age receive 1 dose of MMR vaccine that all school-aged children receive 2 doses of MMR, and that all adults have evidence of immunity against mumps. As noted below, two doses of mumps vaccine are more effective than a single dose. Consequently, during outbreaks and for at-risk populations, ensuring high vaccination coverage with two doses is encouraged. For example, HCWs may be at increased risk of acquiring mumps and transmitting it to patients, and therefore should receive 2 doses of MMR vaccine or provide proof of immunity. Since vaccination is the cornerstone of mumps prevention, public and private health entities concerned about spread of mumps in a population should review the vaccination status of populations of interest and work to address gaps in vaccinati
