Both the LA and Stanford studies are junk. Easily explained by false positives inherent to the test. Stuff like this is why pre-print services can have disastrous consequences.
https://statmodeling.stat.columbia.edu/2020/04/19/fatal-flaw...
https://statmodeling.stat.columbia.edu/2020/04/19/fatal-flaw...
I'm sorry that literally all of the seroprevalence data hurt your priors. But the virus is widespread, not very deadly, and people are going to go back to work soon. You can stay home. You will be safe at home.