Professor Denis Rancourt - Why Masks don't work on The HighWire with Del Bigtree

First published at 12:24 UTC on July 2nd, 2020.

For evidence-based information about COVID-19, please visit

To guard against censorship, this is a mirror of the video at:

CategoryHealth & Medical
SensitivityNormal - Content that is suitable for ages 16 and over
The owner has disabled discussion of this video.