Additional file 1 of A booster hepatitis B vaccine for children with maternal HBsAg positivity before 2 years of age could effectively prevent vaccine breakthrough infections

Additional file 1: Fig. S1. Enrolment and follow-up of participants. Table S1. Comparison of the baseline characteristics of children followed up and lost to follow-up and those of their mothers. Table S2. Comparison of baseline characteristics of children with different anti-HBs levels at the age of 7 months and those of their mothers. Table S3. Genotype, subtype, homology and S region mutation comparisons of infected mother-child HBV pairs. Table S4. Comparison of the baseline characteristics of children with and without HBV VBIs and those of their mothers.