TY - JOUR T1 - Are Boosters Necessary If Adult Patients Do Not Achieve Seroconversion After 2 Doses of the MMR Vaccine? JF - The Journal of the American Board of Family Medicine JO - J Am Board Fam Med DO - 10.3122/jabfm.2022.220285R1 SP - jabfm.2022.220285R1 AU - Lakshmi Karra AU - Allison Costello AU - Brooke M. Trudeau AU - Morteza Khodaee Y1 - 2023/01/02 UR - http://www.jabfm.org/content/early/2023/01/02/jabfm.2022.220285R1.abstract N2 - The Centers for Disease Control (CDC) recommend 2 documented doses of the MMR (measles-mumps-rubella) vaccine for adequate measles, mumps, and rubella immunity for all children and most adults. Sometimes, individuals are asked to provide serologic proof of immunity to measles, mumps, and/or rubella for educational or employment purposes. In other instances, serologic testing may be used to help clarify whether an individual has immunity to measles, mumps, and/or rubella. These serologic tests may sometimes show negative or equivocal antibody titers to measles, mumps and/or rubella, raising the question of adequate immunity. This report provides practical guidance for clinicians on when to use serologic testing to determine measles, mumps, and rubella immunity. ER -