8 Matching Annotations
  1. Sep 2020
    1. Take away: Though not a guarantee of health, wearing masks reduces the number of respiratory infections compared to no/inconsistent mask wearing.

      The claim: Masks are protective against clinical respiratory illness.

      The evidence: The authors performed a meta-analysis of random controlled trials and observational studies examining mask use in health care workers. The results showed that wearing masks resulted in fewer infections compared to people without masks. These results agree with other publications (1, 2). One pre-print article which performed meta-analysis showed inconclusive results concerning the effectiveness of masks (3). Based on these meta-analyses, mask wearing results in fewer respiratory infections, though it will not prevent all infections when used as the sole protective measure.

      Sources:

      1) https://pubmed.ncbi.nlm.nih.gov/32497510/

      2) https://pubmed.ncbi.nlm.nih.gov/27632416/

      3) https://www.medrxiv.org/content/10.1101/2020.03.30.20047217v2

  2. Aug 2020
  3. Jun 2020
    1. CDC recommends wearing cloth face coverings in public settings where other social distancing measures are difficult to maintain (e.g., grocery stores and pharmacies) especially in areas of significant community-based transmission.

      It sounds like it's recommended because a significant portion of people with coronavirus are asymptomatic or pre-symptomatic, and the virus can spread through speaking, coughing or sneezing.

    1. we wear cloth face masks because they protect other people from getting COVID-19 from us, in case we have it and don’t know.

      There's no "proof" that these work, but there's a hope that it helps along with hand washing and a distance of six feet.