New cases of COVID-19 in SLO County double over previous week Scripps and last updated 2021-07-27 19:40:21-04 On Tuesday, San Luis Obispo County Public Health officials reported 253 new cases of COVID-19 over the past seven days. That's nearly twice the number of new cases that were reported over the previous seven-day period. From July 14-20, 129 new cases were reported. Tuesday's number is also well above the total number of cases that were reported in the county during the entire month of June when just 166 new cases were reported. So far this month, SLO County has had 482 new cases of COVID-19.