Dr. John Campbell: New Study Masks, No Evidence They Work

Dr. Campbell shows a correlation study RCTs did not show a clear reduction in respiratory viral infection with the use of medical/surgical masks.

There were no clear differences between the use of medical/surgical masks compared with N95/P2 respirators in healthcare workers,

when used in routine care to reduce respiratory viral infection.

Do physical measures such as hand-washing or wearing masks stop or slow down the spread of respiratory viruses?
Source:
ClashofMinds
What's up prof? 157
https://rumble.com/v2f8eq0-157-wup-walter-veith-and-martin-smith-viruses-bacteria-pandemics-is-it-all-.html