Great job—really appreciated.
I was laughing this morning when I saw FR had a _bunch_ of other CV threads, so the original intent of consolidating CV topics is not working real well...
Kinda reminds me of a voluntary quarantine. ;-)
https://pbs.twimg.com/media/ESv5IFpWoAAiVEW.jpg
CDC paper on early US contact tracing.
Shows low public spread, high spread in families (close contacts).