Published on in Vol 22, No 12 (2020): December
Preprints (earlier versions) of this paper are
available at
https://preprints.jmir.org/preprint/24614, first published
.
![Reduction of COVID-19 Incidence and Nonpharmacologic Interventions: Analysis Using a US County–Level Policy Data Set Reduction of COVID-19 Incidence and Nonpharmacologic Interventions: Analysis Using a US County–Level Policy Data Set](https://asset.jmir.pub/assets/18af5b76d91377625925a601d439ba47.png 480w,https://asset.jmir.pub/assets/18af5b76d91377625925a601d439ba47.png 960w,https://asset.jmir.pub/assets/18af5b76d91377625925a601d439ba47.png 1920w,https://asset.jmir.pub/assets/18af5b76d91377625925a601d439ba47.png 2500w)
1 Harvard Medical School, Boston, MA, United States
2 Hikma Health, San Jose, CA, United States
3 University of Toronto, Toronto, ON, Canada
4 Massachusetts General Hospital, Boston, MA, United States
*these authors contributed equally