Grand Strand, Pee Dee doctors stress âmasking upâ and âbacking up six feetâ during vaccine distribution process Doctors advise residents to continue to 'mask up' despite vaccine By Jennifer Roberts | December 15, 2020 at 5:20 AM EST - Updated December 15 at 10:45 AM MYRTLE BEACH, SC (WMBF) - Many across the Grand Strand and the Pee Dee want to know when itâs their turn to receive a dose of the COVID-19 vaccine. This comes after the South Carolina Department of Health and Environmental Control confirmed a limited supply of Pfizerâs vaccine will be distributed to 56 sites throughout the state by the end of the week.