Fig. 5From: Immunogenicity after outbreak response immunization activities among young healthcare workers with secondary vaccine failure during the measles epidemic in Korea, 2019Measles virus (MeV) IgG antibody avidity in each group according to measles immunity status.Ā A MeV IgG antibody avidity at 1āmonth after MMR2. B MeV IgG antibody avidity at 6āmonths after MMR2. C Individual time-dependent MeV IgG avidity at 1 and 6āmonths after MMR2.Ā Group 1: natural immunity; Group 2: vaccine-induced immunity; Group 3: vaccine failure, MMR: measles-mumps-rubellaBack to article page