https://www.sciencedaily.com/releases/2020/04/200408125523.htm

"Physical distancing and other public health measures can reduce COVID-19 spread, but once these measures are lifted, we're at risk of an uptick in cases," says Dr. Ashleigh Tuite, assistant professor of epidemiology at the Dalla Lana School of Public Health, University of Toronto. "Dynamic response measures that can be turned up and down in response to where we are on the epidemic curve provide a way to curb transmission while also providing periodic breaks and a chance to return to a more normal life."

The authors modelled several strategies to flatten the epidemic curve, focusing on scarce ICU resources, which can quickly become overwhelmed, over a 2-year period. These include the following scenarios: