Get a COVID-19 vaccine, maybe win a signed Luka Dončić jersey Vaccine sweepstakes are part of an effort by the Dallas Regional Chamber to encourage vaccination and return local businesses to pre-pandemic "normal." Author: Kevin Reece Updated: 6:01 PM CDT June 29, 2021 DALLAS — The Dallas Regional Chamber upped its incentives Tuesday for North Texans to help the state exceed the 70% mark that experts say could lead to herd immunity. Slightly more than 57% of Texans over the age of 12 are fully vaccinated against COVID-19. According to the Texas Department of State Health Services, Collin County leads the greater D-FW area with 66.69% of those over the age of 12 fully vaccinated. Denton County is at 60.08%, Dallas County is at 57.59% and Tarrant County is at 53.84%.