Orange County reports 155 more cases of COVID-19

County officials, meanwhile, announced a partnership with UC Irvine to conduct a survey to get a better handle on coronavirus-related statistics that could help with quarantine programs and easing of restrictions. UCI researchers will use serology tests of 5,000 residents to see if they have developed antibodies as a result of infection. The aim is to better focus on at-risk populations and to understand how long immunity to COVID-19 may last. UCI assistant professor of public health and epidemiology Daniel Parker said the effort will create a baseline of data that can be used if other surveys are done later.