Vaccine clinic at Darlington Raceway fully booked; Gov. McMaster scheduled to visit A new clinic set for staff in Florence school districts 2, 3, and 5 What to expect after getting a COVID-19 vaccine By WMBF News Staff | March 3, 2021 at 2:29 PM EST - Updated March 4 at 4:56 PM DARLINGTON, S.C. (WMBF) â All appointments for McLeod Healthâs mass COVID-19 vaccination event at Darlington Raceway are completely booked, according to hospital officials. McLeod Health officials said Tuesday that Darlington Raceway had received a special exemption to move to Phase 1B for its Friday, March 5 vaccine clinic because doses were still available. South Carolina Gov. Henry McMaster will also be visiting Fridayâs event, according to a press release from his office.