Figure 1: Flow chart. LRTI: Lower Respiratory Tract Infection.
Figure 2: Titers of antibodies against N protein in different subgroups A. Sex, B. type of pregnancy, C.Mode of delivery, D. Gestational age at delivery, E. Infant birth weight, F. Parity, G. Date of birth (epidemic peak), H. VS-LTRI. Boxplots present medians and interquartile ranges [IQR], wiskers 1.5 times the IQR, and outliers are > 1.5 times and < 3 times the interquartile range beyond end of the box. *p < 0.05, **p < 0.01, ***p < 0.001 in Student t-test or ANOVA.