The Sullivan County Regional Health Department has announced that it will cease giving first doses of the Pfizer vaccine at Whitetop Creek Park after Friday, April 30.According to a release from the health department, second doses of the Pfizer vaccine will given at the park until May 21.“Per guidance from the Tennessee Department of Health, CDC, and FDA, the Sullivan County Regional Health Department will resume administration of the Johnson & Johnson vaccine beginning on April 26th at 12:00 p.m.,” the release states.