R(t) was calculated using the EpiEstim package, developed by Cori et al. (2013; DOI: 10.1093/aje/kwt133), in the R software environment. Accurate episode date was used as the time anchor and future cases are adjusted using a "Nowcast" method that I developed in 2020 - one that is now being used by Ottawa Public Health. Estimate of R(t) uses a 7-day window, and a Generation Time consistent with current literature (mean 3.5, SD 3.3). I use case data sourced from the Government of Ontario (2021, ontario.ca).