Covid-19 outbreaks are far more likely in schools that don’t require students and staff to wear masks, new data from the US Centers for Disease Control and Prevention shows. Two studies released Friday support the agency’s recommendation for universal indoor masking in schools.
One study in Arizona showed schools with no masking requirement were about 3.5 times more likely to have a Covid-19 outbreak than schools that had a universal masking requirement.
A second study showed counties across the US where schools required mask use also had less transmission of the virus in the community in general.
