Preliminary results from a COVID-19 antibody testing study reveal that 175,000 people may have been infected with the coronavirus in Riverside County. The number comes from a randomized study by the Riverside University Health System released Monday. The study of 1,726 randomly chosen residents showed 1,621 tested negative and 101 had developed COVID-19 antibodies. Based on that data, it is estimated there have been between 118,000 and 175,400 infections in Riverside County. In a press release,