zda.Rd
Given a function describing the FoI (\(h_\tau(a)\)), and a parameter describing the clearance rate of infections (\(r\)), the density of parasite clones of age \(\alpha\) distributed among a cohort of humans of age \(a\) is $$z_\tau(\alpha, a) = e^{-r \alpha} h_\tau(a-\alpha)$$
zda(alpha, a, FoIpar, tau = 0, hhat = 1, r = 1/200)
a numeric vector of length(alpha)