School districts that required masks this fall saw significantly fewer coronavirus cases than those where masks were optional, according to a large study of Arkansas schools by the Centers for Disease Control and Prevention (CDC).
The CDC looked at 233 school districts and found those with mask requirements saw a 23 percent lower incidence of coronavirus cases. Rates in districts with partial requirements — for instance, places that required them in hallways but not classrooms — were in between.
"Masks remain an important part of a multicomponent approach to preventing COVID-19 in K-12 settings, especially in communities with high COVID-19 community levels," concluded the study, which published Tuesday.
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