Poisson Attack Rates

Usage

# S3 method for class 'pois'
F_ar(eir, b, pars)

Arguments

eir

the daily eir for each stratum

b

the probability of infection, per bite

pars

an xds object

Value

a numeric vector: attack rates for the population strata

Details

This function computes the daily attack rates ($\alpha$), the fraction of a cohort that gets infected in a day, as a function of the daily EIR ($E$) under a Poisson model for the distribution of bites per person, and the probability of infection per infective bite ($b$): $$\alpha =1-e^{-bE}$$ The expression is equivalent to

ppois(0, b*eir, lower.tail=FALSE)

See also