Customizable COVID model for reopening counties

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As the number of NPIs increase, COVID spread decreases. Interventions can compound to reduce spread.

The COVID Response Simulator is a localized, customizable version of the public Covid Act Now (CAN) model for NACo members. With it, you can take a powerful SEIR epidemiology model and customize it for your county to help plan your response to COVID. The inputs and assumptions in the simulator are modifiable and can be changed to reflect your local realities.

In addition, you can project the impact of specific Non-Pharmaceutical Interventions (NPIs) for your county, such as closing schools, restricting business activities, and canceling large events. Based on your inputs, the simulator generates data and graphs illustrating COVID forecasts with and without these NPIs, including estimated case numbers and hospitalizations. 

CAN is a 501c3 nonprofit, built by a multidisciplinary team of technologists, epidemiologists, health experts, and public policy leaders, affiliated with the Harvard Global Health Institute, Georgetown University Center for Global Health Science and Security, and Stanford University Clinical Excellence Research Center.


  1. Before you begin, please take a few minutes to watch a short tutorial on how to use the simulator.
  2. Click on this link to create a copy of the simulator for your use. You’ll be prompted to make a copy so that you can work in your own document.
  3. Review the information in the first tab in Orange
  4. If you have any questions about our model or the data we use, please visit our website for more information and you can learn about our metrics and more on our YouTube channel

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