For health care workers, cloth masks *increase* risk of infection compared to no mask in a randomized controlled trial. @zeynep ? https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4420971 …
-
-
The authors raise this point in the discussion but say the study is not designed to address it. Cloth mask being potentially harmful is an inference from their data.
-
Ridiculous. The trial cannot test that, because no group went without a mask. Therefore, claiming a cloth mask is harmful based on this trial is misinformation. https://twitter.com/aarongraves/status/1244632644001968130?s=20 …
This Tweet is unavailable. - Show replies
New conversation -
Loading seems to be taking a while.
Twitter may be over capacity or experiencing a momentary hiccup. Try again or visit Twitter Status for more information.