@arzachel
>During March 1–December 31, 2020, state-issued mask mandates applied in 2,313 (73.6%) of the 3,142 U.S. coun-ties. Mask mandates were associated with a 0.5 percentage point decrease (p = 0.02) in daily COVID-19 case growth rates 1–20 days after implementation and decreases of 1.1, 1.5, 1.7, and 1.8 percentage points 21–40, 41–60, 61–80, and 81–100 days, respectively, after implementation (p<0.01 for all) (Table 1) (Figure). Mask mandates were associated with a 0.7 percentage point decrease (p = 0.03) in daily COVID-19 death growth rates 1–20 days after implementation and decreases of 1.0, 1.4, 1.6, and 1.9 percentage points 21–40, 41–60, 61–80, and 81–100 days, respectively, after implementation (p<0.01 for all). Daily case and death growth rates before implementa-tion of mask mandates were not statistically different from the reference period.

Wow from the CDC themselves now. Lines up exactly with what the Danish mask study found last summer too. An average of only 1.32% difference - NEGLIGIBLE DIFFERENCE.

@arzachel Doing actual science in a world of "WE BELIEVE IN SCIENCE!" is a dangerous heresy