[OutsiderFan]

https://www.reuters.com/article/us-healt...SKBN23G37V

[OutsiderFan]

https://www.reuters.com/article/us-healt...SKBN23G37V

[BostonCard]

Here's the paper:

https://royalsocietypublishing.org/doi/1....2020.0376

To implement control by wearing facemasks, we assumed that a proportion of the population (p) is wearing a mask. On a day when an individual wears a facemask, the relative infectiousness is reduced by (1 − γ), where γ is the effectiveness of a facemask in reducing transmissibility. We explore two scenarios: wearing a facemask after the onset of symptoms and wearing a facemask all the time.

Note that they assume γ (they provide a number of different possible values from 25% to 95%.  I mean, that's fair because estimates on the effectiveness of masks is about 50 - 75%, but still the article is a bit of a truism.  If masks work to decrease infections, there will be fewer infections.

BC

[BostonCard]

Here's the paper:

https://royalsocietypublishing.org/doi/1....2020.0376

To implement control by wearing facemasks, we assumed that a proportion of the population (p) is wearing a mask. On a day when an individual wears a facemask, the relative infectiousness is reduced by (1 − γ), where γ is the effectiveness of a facemask in reducing transmissibility. We explore two scenarios: wearing a facemask after the onset of symptoms and wearing a facemask all the time.

Note that they assume γ (they provide a number of different possible values from 25% to 95%.  I mean, that's fair because estimates on the effectiveness of masks is about 50 - 75%, but still the article is a bit of a truism.  If masks work to decrease infections, there will be fewer infections.

BC