Unmasked Again

It's easy to deceive
It's easy to tease
But hard to get release
--Billy Idol

Another study, this one out of U of Louisville, finding no significant effect of either mask use or mask mandates on CV19 cases.

Keep in mind that what officially was counted as a CV19 'case' was not constant throughout the study period.  PCR thresholds were being lowered, resulting in more cases being counted at a given 'true' level of infection.

As such, it would be interesting to add both hospitalizations and death counts to this analysis.