1/ MASTER THREAD. Do masks work?

Kudos to @ianmSC who compiled a simple set of graphs charting the rise and fall of #COVID19 cases & hospitalizations ALONG SIDE of the date of mask mandates. Take a look...

1) Israel vs. Sweden
2) Miami-Dade
3) Hawaii (cases)
4) Hawaii (hosp)

2/

1) LA + Orange + Ventura + San Diego
2) NYC
3) Kansas
4) West Virginia

3/

1) Mississippi
2) Philippines
3) Peru
4) LA County (with occasional snark added)

4/
1) Spain
2) France
3) L.A vs. Sweden
4) Spain, France & Sweden

5/ You can also play around with our interactive tool showing the NYT survey on the county level of mask usage together with 60 days of cases after that survey.

There is essentially NO correlation between mask usage and case growth per 100K https://rationalground.com/interactive-tool-masks-covid-19/