Thank you. Interesting stuff. This is the only study I've seen that actually presents evidence for masks slowing the spread. The comment section is a worthwhile read, too. I would like to see another study like this that's more recent, given that some locales started their mask mandate after May 15. I would also like to see if there's an effect on deaths and hospitalizations (the idea being, if mask mandates only slow the growth of asymptomatic cases, they are quite useless from a health perspective).