Fig. 1From: Antibody induced by one-dose varicella vaccine soon became weak in children: evidence from a cross-sectional seroepidemiological survey in Beijing, PRCDistribution curves of anti-VZV concentration of Beijing residents in 2012 by a age group, b gender and c vaccine vaccination (n = 2157). There were statistically significant differences in anti-VZV concentrations between age groups (P < 0.001) and vaccination status (P < 0.001), but no difference between gender (P = 0.221), by x2 testBack to article page