Masquerade Ball 2020 - Pt 5 of 5: Spanish Flu

Do masks really prevent the spread of COVID-19? Are masks "safe and effective"? Check out the information presented here and see. This nearly two hour long presentation from 2022 is divided into five parts covering everything from the changing mask guidance, to the actual data, to a reflection on history repeating.
Masquerade Ball 2020:
Pt 1 of 5: Mask Flip Flopping
Pt 2 of 5: Mask Hypocrites (Rules For Thee)
Pt 3 of 5: The Studies
Pt 4 of 5: The Charts
Pt 5 of 5: Spanish Flu