EUROPEAN JOURNAL OF PEDIATRICS, cilt.174, sa.7, ss.883-890, 2015 (SCI-Expanded)
Vaccination should be timed to take into account the potential interference of maternal antibodies. The purpose of this study was to determine the persistence of maternally acquired antibodies to hepatitis A and varicella zoster in a group of healthy infants between 6 and 24 months of age. These infants were divided into four groups according to the age at the time of follow-up visits. The study group consisted of infants who were brought to the 6-month follow-up visit (group 1, n = 100), 12-month follow-up visit (group 2, n = 99), 18-month follow-up visit (group 3, n = 59), and 24-month follow-up visit (group 4, n = 59). Hepatitis A, varicella IgG, and IgM antibodies were analyzed qualitatively. Hepatitis A IgG seropositivity was determined as 71 % in group 1, 41.4 % in group 2, 0 % in group 3, and 8.5 % in group 4 (p < 0.001). Varicella IgG seropositivity was found to be 5 % in group 1, 4 % in group 2, 4 % in group 3, and 1 % in group 4 (p > 0.05).