For dts models, compute
the attack rates, the expected probability of infection
over one time step, is a weighted sum of local and travel exposure.
# S3 method for class 'dts'
Exposure(t, y, pars)an xds object
Local attack rates (AR or \(\alpha\)) are a function of local daily entomological inoculation rates (dEIR or \(E\)), and a model for the probability of infection per infectious bite, \(b\) (from \(F_b\), as defined by an \(\cal X\) model). The total attack rates also consider exposure to malaria while traveling, (\(T_\delta\)): $$\alpha = (1-\delta) \; F_\alpha(E, b) + \delta\; T_\alpha(b)$$
Related: Exposure & F_ar.pois & F_ar.nb & travel_malaria