Transmission Status
We estimate \(R_t\) is currently around to for of Illinois. \(R_t\), the instantaneous
reproductive number, tells us whether the epidemic is growing (\(R_t\) > 1), shrinking (\(R_t\) < 1), or
staying the same (\(R_t\) = 1).
The curves below are estimated using different methods and data sources. Northwestern University (NU) estimates \(R_t\) from a dynamical model, which is fitted to COVID-19 hospitalizations and deaths.
The University of Chicago (UC) estimate derives from hospital admissions with COVID-like illness using methods in EpiNow2. Each curve is shown with its 95% CI.
The date next to the model name refers to the date of model fit. For more details and
links to the models, see the About page.