Early antibody test results reveal more Covid-19 infections than confirmed cases
neurosciencenews.com
neurosciencenews.com
"With help from medical students from the Keck School of Medicine of USC, USC researchers and public health officials conducted drive-thru antibody testing on April 10 and 11 at six sites. Participants were recruited via a proprietary database that is representative of the county population. The database is maintained by LRW Group, a market research firm."