wut? LA county will be randomly testing 1000 people to see if they have antibodies to #covid19 .. HOW will they find these people if we are safe homed/quarantined?? How about contacting the ones who have had it without a test?? it's still the same data result of exposure.
You can learn more about the test, including its procedures, here:https://news.usc.edu/168497/antibody-testing-covid-19-pandemic-usc-los-angeles-county/ …