Updated 3 hours ago NBC Universal, Inc. Some of the largest retailers in the world aren’t waiting for the state and counties to decide whether to agree with the CDC that vaccinate people no longer need masks in most situations. Trader Joe’s, Costco and Walmart have all announced they're now dropping their mask mandates for those who are fully vaccinated. Download our mobile app for iOS or Android to get the latest breaking news and local stories. Word spread fast at Trader Joe’s, but customers aren’t taking them off just yet. Diana Nakano of Santa Clara was surprised, and relieved, to hear the market was no longer requiring masks for those fully vaccinated. She kept her mask off as she went shopping , but emphasized she is not an anti-vaxxer. In fact, she’s been very diligent.