There were results from studies showing weak effects of self-protection even by ...

		bipson on Oct 28, 2020 \| parent \| context \| favorite \| on: Over 80% of Covid-19 patients in a hospital study ... There were results from studies showing weak effects of self-protection even by "simple" surgical masks a few months ago. Evidence seems to indicate there is such an effect - and contradicting the initial assumption that there isn't.