SANTA ANA, Calif.—Orange County’s weekly averages for COVID-19 doubled July 20, but hospitalizations decreased. The county’s case rate per 100,000 residents increased from 2.6 to 4.9 and the test positivity rate jumped up from 1.8 percent to 3.3 percent. The county’s Health Equity Quartile rate, which measures the disadvantaged communities hardest hit by the pandemic, increased from 1.9 percent to 3.4 percent. Hospitalizations declined from 140 to 126, but the number of intensive care unit patients remained at 59. The state releases weekly averages on Tuesdays. The county had recently been reporting coronavirus statistics once a week, but switched Monday to a more frequent schedule of releasing numbers every weekday in light of the increasing number of infections. The Orange County Health Care Agency (OCHCA) reported 315 new cases on July 20, bringing the cumulative total to 259,695 cases since the pandemic began. Officials logged one new COVID-19 fatality, which …