Fig. 2
From: Predicting temperature-dependent transmission suitability of bluetongue virus in livestock
A schematic illustration of BTV transmission. The host population is composed of three classes: susceptible (S), infected (I), and recovered (R). The midge population is composed of a susceptible class (\(S_v\)), three exposed classes (\(E_v\)), and an infected class (\(I_v\)). Black arrows show movement between classes and red arrows indicate contact potentially leading to transmission