Figure 1.

Schematic diagram of the human and vector model states. The human population (N) is divided into 4 compartments: susceptible (S), infected latent (E), infectious treated (T) and infectious untreated (Ι) individuals. The latent period has 2 sub-states: latent which have not yet developed asexual blood-stage parasites (E₁) and latent with asexual blood-stage parasites (E₂). Before becoming recovered, individuals in I compartment need to pass through 2 sub-states: those who have not yet (Ι₁) and those who have spontaneously cleared the asexual blood stage parasites (Ι₂). The mosquito population (M) is divided into 3 compartments: uninfected (U), infected latent (L) and infectious (V) mosquitoes. The addition of FSAT to PCD allows for the detection and treatment of individuals in E₂, I₁ and I₂ compartments.