- Nov 17, 2009
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This one comparing various mask policies in neighboring California counties. Once again, there is no correlation between mask policy and Covid surge. It’s all just window dressing and dogma.
www.sfgate.com
![www.sfgate.com](https://s.hdnux.com/photos/01/21/31/13/21336812/4/rawImage.jpg)
Were Calif. mask mandates effective vs. delta? What the data says.
Here is a breakdown comparing the course of the delta wave in notable California counties, with and without mask mandates.
![www.sfgate.com](https://www.sfgate.com/sites/sfgate/favicon-32x32.png)