Fig. 6

Prevalence and reinfections of S. haematobium in compliant pre-school aged children attending at each time. Reinfections were considered only in those who came successively (the compliant group) at each survey point. The reinfections rates were calculated as a proportion of the number of infected participants (prevalence) at a time point. Reinfection rates could not be measured at three months follow up survey because we had no 6 weeks post treatment survey to ascertain infection clearance