The United States is starting to take action as we are learning more information about the new omicron variant of COVID-19.
The Biden White House is restricting foreign travelers from South Africa and seven other countries starting today.
Health officials hope this will give the U.S. more time to learn as much as possible about this strain.
So far, the new variant has been found in 12 different countries.
Health officials believe omicron could spread much more rapidly than other strains.
The centers for disease control and prevention says omicron cases have not been confirmed in the U.S. yet, but they are advising people to protect themselves from the potential threat.
The chief medical officer for Moderna says his company should know in a couple weeks if its vaccine is effective against omicron.
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