Having everyone wear a mask cuts the risk of spreading the covid in public spaces far more effectively than a scattershot approach. But if you do plan to keep wearing a mask, you can still get decent protection as the sole mask-wearer, if you do it right.
If you do go inside, the safest situation is an uncrowded venue. And the longer you spend indoors, the more you open yourself up to infection.Lisa Maragakis“That number needs to be in the single digits — somewhere between one to five cases per 100,000 — before we’ve reached that low level where the probability is such that you’re less likely to encounter someone with the virus,” says Maragakis, who’s senior director of infection prevention at the Johns Hopkins Health System.
Of course, all these estimates are based on certain assumptions and can’t be taken as a strict guide. Brosseau’s relies on the idea that there’s a high risk of infection for two unmasked people in close proximity for 15 minutes — but that time span comes from contact-tracing guidance used by the Centers for Disease Control and Prevention, not data about the virus.
Others play it much safer. Jimenez says he isn’t going back to the grocery store yet, even with a high-quality respirator.
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