A discarded mask in a Billings, Mont. alley, Nov. 25, 2020. Federal health officials say people fully vaccinated against COVID-19 can go about life mask-free, though some places still require them. Some local health officials say the change could motivate unvaccinated people to get the shot. The federal Centers for Disease Control and Prevention says real-world data show that fully vaccinated people becoming infected with COVID-19 is rare. The CDC now says fully vaccinated people, meaning those two weeks out from their final dose, can go mask-free and don’t need to social distance indoors, even in crowds. Fully vaccinated people also don’t need to get tested or isolate after a known exposure.