A systematic review of four randomized controlled trials on masks done between 1990 and last month shows the use of medical masks did not increase viral respiratory infection or clinical respiratory illness.
from Top Technology News -- ScienceDaily https://ift.tt/2V9A1bR
Monday 6 April 2020
Surgical masks likely good for most COVID-19 treatment
Posted By: Unknown - April 06, 2020About Unknown
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