Make incubation period pmf

This uses NNH's logic and workflow to make a pmf corresponding to the incubation period for COVID after Omicron used in Park et al 2023 (which we also use for the lognormal generation interval). These estimates are from early Omicron.

Usage

make_incubation_period_pmf(
  backward_scale = 3.6,
  backward_shape = 1.5,
  r = 0.15
)

Value

pmf of incubation period