Nation The CDC is recommending masks for vaccinated people in high transmission areas. What does that mean? July 27, 2021July 28, 2021 Jeanine Santucci, USA TODAY Comments Off on The CDC is recommending masks for vaccinated people in high transmission areas. What does that mean? Should you wear a mask if you're fully vaccinated? If you're in an area with high COVID transmissibility, the CDC says yes. Here's what that means.