also impact the opening of schools," Pennsylvania Health Commissioner Dr. Rachel Lavine said Thursday.CHECK: County-By-County Map Of Coronavirus casesAdvertisementIn the last 7 days, Delaware County has seen a steady uptick in COVID-19 cases topping out at nearly 8,100 infections on Wednesday.This week, Philadelphia is now averaging 139 cases per day, up from 110 cases per day during last week.
About 61 percent of cases are in people under the age of 40.MORE DETAILS: Philadelphia's 7/23/20 UpdateFewer of these cases are occurring in nursing homes.
Of the city's 46 nursing homes, 40 have had no new cases the past two weeks."We are concerned about infections in that younger group because they could spread it to older people that they're in.