It may be safer for school kids to stay maskless in classrooms
The risk of carbon dioxide inhalation needs to be studied in depth
This fall, schools will be open across the US. The few places still reluctant are being over-fearful. As noted this week in Nature, there is mounting evidence that even in the absence of vaccination for the young, neither schools nor schoolchildren are significant sources of the covid virus’s spread. On Friday, the US Centers for Disease Control issued new guidance meant to encourage reopenings by giving schools more flexibility on classroom safety. So the question isn’t whether schools should open. It’s what mitigation measures they should take when they do.