the actual data on mask effectiveness
1 year ago
62
Steven Petty (B.S.Ch.E. M.S.Ch.E. M.B.A.), Industrial Hygiene & PPE expert, "goes through the actual data on mask effectiveness" during his senate testimony to New Hampshire (US) Health and Human Services (5th April 2022).
Xposted from Ivor Cummins' channel:
https://www.youtube.com/@IvorCumminsScience
https://www.youtube.com/watch?v=ZFjLFqESxY0
Ep 141 The Ultimate PPE Expert with Incredible Insights into Mask Science
11 May 2022
"Here is a document with references which he [Stephen Petty] and a team submitted to NIH and CDC:
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