The US Centers for Disease Control and Prevention (CDC) has announced that fully vaccinated Americans do not need to wear a mask when they are outdoors.
Those who have received all required jabs can ditch their face coverings if alone or in small groups of vaccinated people, the new guidelines say.But the CDC left in place its guidance to don a mask indoors and in crowded settings or venues.
Over 95 million Americans have been fully vaccinated thus far.
Following the CDC announcement on Tuesday, President Joe Biden celebrated the new guidance as "extraordinary progress".
The president also urged Americans who have not yet received their shot to do so, calling it a "patriotic" act.
"Vaccines are about saving your life but also the lives of the people around you - but they're also about helping us get back closer to more normal living."
Health officials presented the new safety guidelines at Tuesday's White House coronavirus task force briefing.The guidelines are for the fully vaccinated - which means two weeks after a person's final vaccine jab.
Nearly 141 million Americans - about 42% of the total population - have received at least one vaccine dose as of 26 April, according to the CDC.