Calculate the final size of an epidemic. Usethe the following logic:

Usage,
epi_finalsize(r0)

Arguments

r0

a double, the reproduction number (can be basic or Reff)

Details

1 + 1/R0*W(-R0exp(-R0))

Examples

if (FALSE) {
epi_finalsize(3.5)

plot(seq(1,3,.01), epi_finalsize(seq(1,3,.01)),xlab = "R", 
ylab = "Percent Infected", type = "l")
}