Comments by "betabenja" (@betabenja) on "Reuters" channel.

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  26.  @ginganinga1010  I agree, people should scrutinise evidence, I apologise for insinuating you were coming down on one side or the other. However, the study here says it has no evidence one way or the other: From the link above: "Most studies were underpowered because of limited sample size, and some studies also reported suboptimal adherence in the face mask group" also, "Study designs in the 7 household studies were slightly different: 1 study provided face masks and P2 respirators for household contacts only (34), another study evaluated face mask use as a source control for infected persons only (35), and the remaining studies provided masks for the infected persons as well as their close contacts" this suggests that this meta study itself is a study of potentially inaccurate studies, some with little control over the subject's use of masks, nor having large enough sample sizes for a statistical conclusion. Still; it is a significant paper. here is a more recent study from the same source, suggesting "Although evidence is limited for their effectiveness in preventing transmission of severe acute respiratory syndrome coronavirus 2, either for source control or to reduce exposure, the wearing of masks by healthy persons may prevent potential asymptomatic or presymptomatic transmission (3). This marginal reduction in transmission may produce substantial results, particularly when it is implemented early." https://wwwnc.cdc.gov/eid/article/26/8/20-1498_article#r2 but again, the methodology is not tightly locked down. That study also references one specifically including the corona virus: "Our results indicate that surgical face masks could prevent transmission of human coronaviruses and influenza viruses from symptomatic individuals." https://www.nature.com/articles/s41591-020-0843-2 but again, sample sizes seem small, even if the study looks to have have randomised its samples and performed the study in a controlled manner. I guess, it is up to us to evaluate these sources, but at least you are providing some for scrutiny. For that, thanks. we need more like you on the side of the discussion, otherwise it's like shining a torch into a void.
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