Originally posted by kccd
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[Dr. Aaron Carroll, a professor at Indiana University School of Medicine,] cautions that this was not a randomized, controlled study and there could have been other factors at play (such as more physical distancing in social situations and fewer large gatherings) in the counties that were enforcing masks.
https://www.npr.org/sections/health-...as-study-finds
https://www.npr.org/sections/health-...as-study-finds
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