Fig. 1: Predicted seroprevalence and FoI estimates using Model 4.

A Posterior estimates for the FoI for each study, where the central point represents the posterior mode and the line represents the 95% CrI based on 10,000 samples of the posterior distribution. B The mean predicted seroprevalence by age (blue) with vertical 95% CrI based on 10,000 samples of the posterior distribution, fitted to age-stratified seroprevalence data (red) with points showing the proportion seropositive with vertical 95% CI (red) based on sample sizes varying from 6 to 1946 across age classes with individual n values presented in Table 1. Horizontal bars show age class width.