The science shows that high % of mask compliance (& social distancing) takes the R0 below 1 meaning the pandemic slowly dies out.
https://www.google.com/amp/s/medicalxpress.com/news/2020-06-widespread-facemask-covid-.amp
If a sick person coughs/talks/ breaths into a mask and:
- The mask captures the virus before it infects someone the chain of infection stops and R0 decreases
- The mask with social distancing directs the virus away from a healthy person the chain of infection stops and R0 decreases
- A healthy persons mask captures virus before infecting them the chain of infection stops and R0 decreases.
This is exactly the same as how herd immunity works. The chain of infection stops when the virus reaches a host it can’t infect. If that’s because of a vaccine or a mask. It doesn’t matter.
When the whole population takes it seriously then you can drive the infection so low that you can remove restrictions and just follow up with contact tracing for the few tens of cases that pop up.
We’ve got folks going to Australia and after a 2 week quarantine they can move about the country freely, no masks, with bars and restaurants open. They’ll simply contact trace any residual cases that occur.
We could have had that here but... well you know why.