There was little/no evidence for the efficacy of masks when lockdown started. It's still debated now. In fact, the WHO recommended only people with symptoms wear them to start, and that they were not necessary for those without.
the WHO recommended against people without symptoms wearing them
Well in that case, WTF are they making them mandatory for now??
WTF are they making them mandatory for now??
There's more evidence that they are useful (even non medical-grade ones).
@hippy started
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There was little/no evidence for the efficacy of masks when lockdown started. It's still debated now. In fact, the WHO recommended only people with symptoms wear them to start, and that they were not necessary for those without.