In the US, fully vaccinated people don't need to wear masks in most places now

• Fully vaccinated people can shed their masks in most places, says US CDC.
• The revised guidance is a major step toward returning to pre-pandemic life.
• Masks became a political issue in the United States with then-President Donald Trump resisting mandating face coverings while President Joe Biden embraced masks

---

The U.S. Center for Disease Control and Prevention (CDC) on Thursday advised that fully vaccinated people do not need to wear masks outdoors and can avoid wearing them indoors in most places, updated guidance the agency said will allow life to begin to return to normal.

The CDC, which hopes the guidance will prod more Americans to get vaccinated, also said fully immunized people will not need to physically distance in most places.

The turnaround came just 16 days since CDC issued revised guidance that left many restrictions in place for vaccinated people. The agency came under fire in March for initially discouraging immunized grandparents to fly to visit loved ones.

Read more: Coronavirus cases in United States decline following vaccinations

CDC Director Rochelle Walensky said the new guidance was based on a sharp reduction in cases, expansion of vaccines to younger people and vaccine efficacy against coronavirus variants.

"We followed the science here," Walensky.

President Joe Biden emerged at the White House for remarks without a mask. "I think it's a great milestone, a great day," he said.

"If you're fully vaccinated and can take your mask off, you've earned the right to do something that Americans are known for all around the world: greeting others with a smile," he said, flashing a brief smile himself.

Biden earlier shed his mask during a meeting with lawmakers, Republican Senator Shelly Moore Capito told reporters. Some journalists at the White House also removed their masks.

The CDC had faced criticism, even from public health officials, that it has been too cautious in its guidance. Critics have said people need to see more benefit of getting vaccinated in terms of returning to normal activities.

"In the past couple of weeks, we have seen additional data to show these vaccines work in the real world, they stand up to the variants, and vaccinated people are less likely to transmit the virus," the agency said in a news release.

It added, "We needed to take the time to review the full body of evidence to get this right, and that’s how we came to this decision."

Read more: US imposes travel restrictions on India to limit COVID-19 spread

The revised guidance is a major step toward returning to pre-pandemic life, but the agency still recommends vaccinated people wear masks on planes and trains, and at airports, transit hubs, mass transit and places like hospitals and doctor's offices.

The U.S. government last month extended mask requirements across transportation networks through Sept. 13. The Transportation Security Administration said it would "work closely with the CDC to evaluate the need for these directives." Walensky said CDC will soon issued updated transit guidance.

The new guidance says vaccinated Americans can resume all travel, do not need to quarantine after international trips and do not need to be tested for COVID-19 if exposed to someone who is COVID-19 positive but asymptomatic.

However, Americans still face some international travel restrictions, including non-essential trips to Canada.

Masks became a political issue in the United States with then-President Donald Trump resisting mandating face coverings while President Joe Biden embraced masks and mandated them for transit hubs. Some U.S. states issued aggressive mask mandates while others declined or dropped them months ago.

The CDC said fully vaccinated people should still wear masks where required by federal, state, local, tribal or territorial laws, and abide by rules and regulations set by local businesses and workplaces.

In late April, the CDC said fully vaccinated people can safely engage in outdoor activities like walking and hiking without masks, but recommended their continued use in public spaces where they are required.