https://medium.com/@AmeshAA/covid19-a-path-forward-868d5e8dc... https://www.cnbc.com/2020/03/17/coronavirus-us-must-confront...
https://medium.com/@AmeshAA/covid19-a-path-forward-868d5e8dc... https://www.cnbc.com/2020/03/17/coronavirus-us-must-confront...
The Imperial College COVID-19 Response Team, for example: https://www.imperial.ac.uk/media/imperial-college/medicine/s...
In Germany, the Society for Epidemiology has a similar analysis with similar conclusions: https://www.dgepi.de/assets/Stellungnahmen/Stellungnahme2020...
It was well understood by the authors that a permanent lockdown was not possible and that there would need to be a step 2. They did some modelling of possible step 2 (proposing alternating lockdowns with relaxations for example) but did not go into detail on other options such as enhanced contact tracing, widespread testing, or other options.