Fig. 5

Seroprevalence curves to either P. falciparum antigen for a people living within 500 m of the wadi and b further than 500 m from the wadi. Black circles represent actual data, plotted at median percentiles for age and black line represents the results from a reversible catalytic model. In the clusters close to the wadi, there was evidence for a change in transmission 9 years prior to the survey—this dataset has been fitted allowing for two lambdas