Fig. 2

Global sensitivity analyses using Latin hypercube sampling (LHS) parameter sets and isolating the impact of changes in median cercarial density to force of infection (FOI) and snail density. The median cercarial density is primarily sensitive to the density of snails with high levels of infection possible only with high snail density, irrespective of the snail-to-human transmission rate. There are greater levels of cercarial density for the model without snail age stratification than for models with snail age stratification at comparable snail density and snail-to-human transmission rate values. Juv Juvenile