Figure 4From: Mathematical models of malaria - a review(a) Variation in loss of immunity ( γ ) with force of infection ( h ), and immunity period ( τ ) in absence of new infections. (b) Age-Prevalence curve simulated from Aron-May model for three different levels of force of infection (h). Other parameter values are r = 0.8, q = 0.2, and τ = 5.Back to article page