📍North Dakota had the lowest mask-wearing rate in US in October, according to survey data. States without masks mandates saw sharp spikes.

📍Dakotas also has the highest per capita rate of #COVID19, according to the CDC as of November 6. #MaskUp https://www.vox.com/science-and-health/21546014/mask-mandates-coronavirus-covid-19
2) Let me be clear:

#COVID19 is airborne & require masks.

Masks work. Premium masks (surgical, KN95, KF94, N95+) work even better, especially if others refuse any mask.

Ventilation & filtration (HEPA or MERV13+) key.

Masks save lives.
3) I lay out most of the studies in masks and why we know they work in 🧵 below. Oh and Beauty and the Beast “Wear a Mask” remake of “Be our Guest”. https://twitter.com/drericding/status/1317961637442314242
You can follow @DrEricDing.
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