Publix, Walmart, Winn-Dixie, Walgreens, CVS offer 3rd COVID vaccine to immunocompromised Publix, Walmart, Winn-Dixie, Walgreens, CVS offer 3rd COVID vaccine to immunocompromised August 19, 2021 dzadmin Comments 0 Comment The Centers for Disease Control and Prevention recommends those with moderately to severely compromised immune systems get an additional dose at lease 28 days after receiving a second dose of the Pfizer or Moderna vaccines.