On Saturday, the Health Care District’s mobile clinics offering free, walk-up vaccinations will be in the parking lot of the Lantana Clinic at 1250 Southwinds Drive from 9 a.m. to 4 p.m., as well as in parking lot 5 on the campus of Florida Atlantic University, 777 Glades Road, Boca Raton, from 9 a.m. to 1 p.m. The vaccines will be administered by Palm Beach County Fire Rescue personnel.