Requiring Masks Early In the Covid-19 Pandemic Would Have Prevented Many Deaths – ScienceDirect

Our main counterfactual experiments suggest that nationally mandating face masks for employees early in the pandemic could have reduced the weekly growth rate of cases and deaths by more than 10 percentage points in late April and could have led to as much as 19 to 47 percent less deaths nationally by the end of May, which roughly translates into 19 to 47 thousand saved lives. We also find that, without stay-at-home orders, cases would have been larger by 6 to 63 percent and without business closures, cases would have been larger by 17 to 78 percent.

Source: Causal impact of masks, policies, behavior on early covid-19 pandemic in the U.S. – ScienceDirect

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