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by Sporktacular 900 days ago
We won't need 100% effectiveness and 100% compliance. If they only work at 10% effectiveness, then over a network of thousands, they will measurably save lives.

Studies have shown they work (such as https://pubmed.ncbi.nlm.nih.gov/33483277/), despite the 'ah, yes but only [insert unsupported caveat here]' of some.