THIS IS A GAME-CHANGER "Hundreds Of Thousands In LA Infected With Coronavirus: Study | ...Based on those estimates, as many as 1 in 20 LA County adults have already been infected, most of whom hadn't been tested or hospitalized for COVID-19, the diseases caused by the coronavirus. That's 28 to 55 times higher than the 7,994 confirmed cases of COVID-19 reported to the county by the time of the study in early April."
https://patch.com/california/los-angeles/hundreds-thousands-la-infected-coronavirus-study