President Biden said Friday the United States must support global efforts to stop the spread of the coronavirus, especially as new variants emerge, “in order to beat covid” at home.

“In the United States of America, we’re doing everything that needs to be done to take care of the American people within our borders,” Biden said at a news conference. “But look what’s happened …. We’re starting to make some real progress, and you find out there’s another strain.”

He said the country cannot “build a wall around America” to keep covid out, so his administration must work to address the virus in other nations as well. Biden also touted his administration’s efforts to ship millions of vaccines to countries in need and find ways to ensure that those shots are distributed to as many people as possible.

“In order to beat covid, we have to shut it down worldwide,” Biden added. White House officials said Friday that the United States shipped 11 million doses to other countries, including 9 million doses to nations in Africa.

Here’s what to know

  • Nearly a dozen omicron cases have been detected around the United States. Maryland, Missouri, Pennsylvania, Nebraska, New York and Hawaii were the latest to announce infections, joining California, Minnesota and Colorado.
  • The Food and Drug Administration on Friday expanded its emergency use authorization for two monoclonal antibodies to treat young children and babies at high risk of severe covid-19 who have tested positive or been exposed to the coronavirus.
  • All international travelers must take a coronavirus test one day before their flight to the United States, starting Dec. 6. Domestic travelers will be required to wear masks on airplanes, trains, buses and other transportation through March 18.
  • Scientists in South Africa say the risk of infection by the omicron coronavirus variant is at least three times higher than from variants such as beta and delta, according to a preprint study published Thursday.