SAN DIEGO—San Diego County reported 390 new cases of COVID-19 and nine new virus-related deaths in its latest data. The number of COVID-19 patients in county hospitals increased from 325 on Sunday to 329, with 90 of those patients in intensive care, according to state figures. Sunday’s numbers brought the county’s cumulative totals to 358,498 cases and 4,090 deaths since the pandemic began. A total of 12,378 new tests were logged by the county on Monday, and the percentage of positive cases over the past 14 days was 3.6 percent. More than 4.76 million vaccine doses have been administered in San Diego County, with 2.47 million people—or 88.2 percent of eligible county residents—having received at least one dose, according to the latest data. Fully vaccinated county residents now number more than 2.21 million, or around 78.8 percent of the county’s eligible population. No-cost COVID-19 vaccines are available at medical providers, …