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[–]OrneryStruggle 1 insightful - 1 fun1 insightful - 0 fun2 insightful - 1 fun -  (0 children)

So in an editorial they affirmed they "could" reduce the spread.

But what's the actual evidence that coverings help prevent people from spreading the virus? They don't link to any. CIDRAP and Oxford CEBM both are clear that there is no evidence.

The JAMA study is currently subject to calls for retraction by dozens of scientists as it's just a modelling study by a couple of computer scientists with no background in bio, physics, virology or epidemiology and its methods don't pass muster even to the untrained eye.

The fact that two hairstylists didn't give COVID to their customers is what we call an "anecdote" and not a study at all. Most people who are in contact with COVID-positive people don't get COVID, even when they live with those people.