SAN DIEGO—San Diego County reported 387 new cases of COVID-19 and 12 deaths in its latest data as the fully vaccinated rate approached 80 percent of eligible residents. More than 4.82 million vaccine doses have been administered in San Diego County, with 2.48 million people—or 88.7 percent of eligible county residents—having received at least one dose. Fully vaccinated county residents number more than 2.23 million, or around 79.4 percent of the county’s eligible population in reports released on Oct. 6. Wednesday’s numbers brought the county’s cumulative totals to 359,537 cases and 4,104 deaths since the pandemic began. A total of 38 new deaths were reported since the last report on Sept. 29—12 women and 26 men who died between Aug. 9 and Oct. 3. Six were 80 years of age or older, nine were in their 70s, nine were in their 60s, seven were in their 50s and seven were …