A study finds that if the U.S. had introduced a uniform national mask mandate for employees of public-facing businesses on April 1, the number of deaths in the U.S. would likely have been 40 percent lower on June 1. “It is a very effective policy that includes relatively little economic disruption.”
https://ift.tt/31hxYG4 via /r/science https://ift.tt/2F6SHFb
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