The federally run mass vaccination site at Valencia College’s West Campus in Orlando now has the single-dose Johnson & Johnson vaccine and is able to inoculate up to 3,000 people a day, officials said Friday. That’s an additional 1,000 shots a day since the program opened on Wednesday. The site runs from 7 a.m. to 7 p.m., seven days a week, both by appointment and to walk-ins.