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Are cloth masks good enough to face the delta variant?

Quartz: “…A large-scale, real-world study published this month found surgical masks especially effective at reducing symptomatic infections. These types of masks prevented 1 in 3 infections among people 60 and older…“We find very strong evidence that surgical masks are effective,” added Jason Abaluck, an economist at Yale who helped lead the study. “My read of that is that cloth masks are probably somewhat effective. They are probably better than nothing.”…

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