fit_epiestim_model: fit_epiestim_model - Function to estimate the reproduction number of an epidemic

Description

A wrapper function for estimate_R from the EpiEstim library to estimate the reproduction number of epidemics to support short-term forecasts

Usage

fit_epiestim_model(
  data,
  window_size = 7L,
  type = NULL,
  mean_si = NULL,
  std_si = NULL,
  recon_opt = "match",
  method = "parametric_si",
  mean_prior = NULL,
  std_prior = NULL
)

Value

Object of class estimate_R (see EpiEstim help page)

Arguments

data: data frame containing two columns: date and confirm (number of cases)
window_size: Integer Length of the sliding windows used for R estimates.
type: character Specifies type of epidemic. Must be one of "flu_a", "flu_b", "rsv", "sars_cov2" or "custom"
mean_si: Numeric User specification of mean of parametric serial interval
std_si: Numeric User specification of standard deviation of parametric serial interval
recon_opt: Not implemented. One of "naive" or "match" to pass on to estimate_R (see help page)
method: One of "non_parametric_si", "parametric_si", "uncertain_si", "si_from_data" or "si_from_sample" to pass on to estimate_R (see help page)
mean_prior: Numeric positive number giving the mean of the common prior distribution for all reproduction numbers
std_prior: Numeric positive number giving the standard deviation of the common prior distribution for all reproduction numbers

Details

fit_epiestim_model currently supports the following epidemics: Influenza, RSV and COVID-19. The default serial intervals for the estimation of R were retrieved from Cowling et al., 2011, Vink et al., 2014 and Madewell et al., 2023 for Influenza A, Influenza B, RSV and COVID (BA.5 Omicron variant) respectively