Fig. 4From: The transfer of maternal antibodies and dynamics of maternal and natural infection-induced antibodies against coxsackievirus A16 in Chinese children 0–13 years of age: a longitudinal cohort studyLoss of protective immunity acquired from mothers and the relationship between duration and maternal antibody titre. A The Kaplan–Meier survival curve for the probability of seropositivity in neonates who received maternal antibodies at birth. B Relationship between time to loss of seropositive immunity and maternal antibody titresBack to article page