They simulate model outcomes, under different levels and duration of interventions. The COVID-19 Simulator allows the simulation of different COVID-19 variant prevalence scenarios. The national and state-level analysis views and analyzes COVID-19 trends in the United States and in selected states, under different levels and durations of the interventions of minimal restrictions, current COVID-19 interventions, stay-at-home orders, and lockdown. The state-by-state comparison compares COVID-19 trends across multiple states under the interventions of minimal restrictions, current COVID-19 interventions, stay-at-home orders, and lockdown. The results can be visualized and downloaded on the website.