"If you're in a community that has a high amount of disease and less than a third of your population is vaccinated, one should consider whether the policy should be to mask," Walensky said. Masking is "more about protecting the two-thirds of the community that are not vaccinated."... In Wyoming, for example, just over 31 percent of the population is fully vaccinated, according to the state's Department of Health. That means the vast majority of residents — 69 percent — remain susceptible to Covid-19. That's why Dr. Andy Dunn, a family physician and chief of staff at Wyoming Medical Center in Casper, wants vaccinated people to continue with masking. "These variants are going to find a way" to survive, Dunn said. "Do whatever it takes for Covid to go away," he added. "If I had to jump on my left foot five times a day, I would do it."