In Virginia, leaders use a model developed by the Biocomplexity Institute at the University of Virginia. UVA doesn’t prioritize coming up with exact case numbers, calling it “impossible and unnecessary.” “The model that we provide the state is not about forecasts or predictions at all, it's about various possible scenarios, and the possible state of the system after a certain period of time,” said Madhav Marathe, one of the researchers who works with the UVA model.