> "Public health authorities" are all really clear: if you're going to wear PPE you need to do it properly. You are confusing two things here. For preventing c

> "Public health authorities" are all really clear: if you're going to wear PPE you need to do it properly. You are confusing two things here. For preventing certain people in certain contexts from being infected, PPE is important. For preventing the average person walking around from infecting others to the point of upsetting curve-flattening efforts, any kind of face covering (even if it be a scarf or a Buff) will satisfy the requirement in most countries now. Indeed, the public health authorities – at least in Europe which is presently my main concern – are very clear here: the authorities overall are calling for masks to be required only in shops or on public transportation. Countries like Poland and the Czech Republic which require masks to be worn at all times in public are outliers. (And I expect their rules to soon be harmonized with the less strict countries. De facto in Poland the outdoor requirement is not even being strictly enforced outside the major cities).