ern: An R package to estimate the effective reproduction number using clinical and wastewater surveillance data

The effective reproduction number, ${\mathcal{R}}_t$, is an important epidemiological metric used to assess the state of an epidemic, as well as the effectiveness of public health interventions undertaken in response. When ${\mathcal{R}}_t$ is above one, it indicates that new infections are increasing, and thus the epidemic is growing, while an ${\mathcal{R}}_t$ is below one indicates that new infections are decreasing, and so the epidemic is under control. There are several established …