Figure 5.
Correlations calculated by linear regression between antibody concentrations determined prior to receipt of a measles, mumps, and rubella vaccine (MMR) dose at 14 months of age (x-axis) and 3 years later (y-axis). (A) All children with a first MMR dose between 6 and 8 months of age, (B) selection of children with a first MMR dose between 6 and 8 months of age and protective antibody levels at 14 months of age (C), and children with a first MMR dose between ages 9 and 12 months are shown.