SANTA ANA, Calif.—COVID-19 hospitalizations in Orange County have more than doubled in the past two weeks, raising concerns among some health officials. “I’m worried about the trend,” said Andrew Noymer, an epidemiologist and University of California–Irvine professor of population health and disease prevention. The county has 1.8 million of its 3.3 million population fully vaccinated, so there are enough unvaccinated residents to potentially eventually threaten overwhelming the hospital system, Noymer said. “I’m not saying it will become overrun. It’s not a prediction… [but] 40 percent is enough with these new variants, which are more transmissible, to generate enough cases to overrun the hospital system,” Noymer said, referring to the unvaccinated population. According to the state Department of Public Health, the county has 121 COVID-19 hospital patients with 26 in intensive care. That’s up from 73 hospitalized and 11 in the intensive care unit (ICU) as of July 6, the last …