Before revision:  We emphasize that our goal is not to replace benchmark methods for estimating the basic reproductive numbers, but rather to discuss the importance of the impact of R's heterogeneity on uncertainty quantification for the current COVID-19 pandemic.
After revision:  We emphasize that our goal is not to replace benchmark methods for estimating the reproductive numbers, but rather to discuss the importance of the impact of R's heterogeneity on uncertainty quantification for the current COVID-19 pandemic.