All mass vaccination sites in Georgia to allow drive-ups, no appointments required Columbus GEMA mass vaccination site seeing decrease in vaccinations (Source: WTVM) By Jessie Gibson | April 30, 2021 at 10:41 AM EDT - Updated April 30 at 11:22 AM GEORGIA (WTVM) - All mass vaccination sites operated by the Georgia Emergency Management and Homeland Security Agency (GEMA/HS) will allow drive-ups with no appointment necessary. The sites will be giving out the COVID-19 Johnson and Johnson vaccine beginning May 3. According to GEMA/HS, sites will administer the single-dose Johnson and Johnson vaccine as available to those who haven’t received the first dose of a different vaccine until operations end on May 21.