"If you develop symptoms, you should put your mask back on and get tested right away", she said.
"Today, CDC is updating our guidance for fully vaccinated people", CDC Director Dr Rochelle Walensky said on Thursday at the White House.
"If you are not fully vaccinated you are not fully protected".
The CDC revealed that there is a big change regarding those individuals in the United States who are fully vaccinated. Whether you choose to get vaccinated or wear a mask, please protect yourself until we get to the finish line.
"Anyone who is fully vaccinated can participate in indoor and outdoor activities - large or small - without wearing a mask or physically distancing", Walensky said.
The US Center for Disease Control and Prevention (CDC) on Thursday eased mask-wearing guidance for people who are fully vaccinated against COVID-19.
Guidelines that stayed the same were that mask don't have to be worn in one's own cabin but will be required while traveling through transportation hubs in the U.S.
The easing guidance could open the door to confusion, as there is no surefire way for businesses or others to distinguish between those fully vaccinated and those who are not.
The CDC last updated its guidance for vaccinated people on April 27.
About 154 million Americans, more than 46% of the population, have received at least one dose of COVID-19 vaccines.
Not all vaccinated Americans will be eager to take off the masks they've become accustomed to wearing this past year in grocery stores and even public parks. She said that there is now ample real-world evidence that vaccines are reducing the spread of the virus between fully-vaccinated people. Walensky encouraged people who have weak immune systems, such as from organ transplants or cancer treatment, to talk with their doctors before shedding their masks.
The new guidelines mark a turning point in Biden's fight against the virus, offering the country a renewed hope that a return to pre-pandemic normally is achievable as Covid-19 cases decrease across the country and as more and more people get vaccinated. While this may serve as an incentive for some people to get vaccinated, that is not the goal.