Computes the probability of being seropositive when Forces-of-Infection (FoIs) vary by age
probability_exact_age_varying(ages, fois, seroreversion_rate = 0)vector of probabilities of being seropositive for age-varying FoI including seroreversion (ordered from youngest to oldest individuals)
Integer indicating the ages of the exposed cohorts
Numeric atomic vector corresponding to the age-varying Force-of-Infection to simulate from
Non-negative seroreversion rate. Default is 0.