According to Marr, you should wear a mask if you’re in crowded indoor environments, where lots of people are sharing the air. “If you take it off to eat in a crowded restaurant, though, it won’t really help protect you.”
Knowing who you’re interacting with may change your holiday plans. “Older and more vulnerable people are less likely to have already caught COVID,” says Paul Hunter, a professor at the Norwich School of Medicine of the University of East Anglia. “So personal precautions are still important if you’re spending time with such people, unless you know they have had a recent infection.”
This is NOT SCIENCE!
Nah
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