Fig. 3

Density distribution curves of gestational age in weeks at initiation of first ANC visit by number of ANC visits attended among women sampled from the KHDSS area. Each curve represents participant’s number of ANC visits i.e. one visit to five visits. Three gestational age windows (28–32 weeks), (26–33 weeks) and (24–36 weeks) for maternal RSV vaccination and the proportion of women attending within that gestational age window during the first ANC visit (29.6, 41.9 and 64.7% respectively), are also shown