Persistence of Measles, Mumps, and Rubella Antibodies in an MMR‐Vaccinated Cohort: A 20‐Year Follow‐up

Abstract

A high rate of seropositivity was found 20 years after the first MMR dose, particularly for rubella and measles. Our results show that MMR vaccine-induced antibodies wane significantly after the second dose. According to epidemiological data, the protection induced by MMR vaccination in Finland seems to persist at least until early adulthood. However, the situation requires constant vigilance.