Figure 3.

Age-specific measles and rubella seroprevalence among serosurvey participants, by district

Weighted age-specific seroprevalence for measles (A) and rubella IgG (B), before and after the measles and rubella supplementary immunisation activities campaign. Shaded areas denote 95% CIs. Equivocal results were classified as positive. Coloured dots denote seroprevalence point estimates for each age by year, estimated using used semiparametric models with penalised regression smoothers, with dot size based on the number of participants who had available data. Age reflects participant age at time of the survey; owing to the time difference between the MR-SIA and the surveys, there were children enrolled in the post-MR-SIA surveys who were older than 15 years at time of the survey, including a small number aged 16 years or older in Dibrugarh and Hoshiarpur districts.