The highly contagious variant has since spread around the world, causing record daily cases in the United States and parts of Europe.
French Prime Minister Jean Castex said Thursday that omicron is now estimated to represent 70% to 80% of all infections in France.
France, which has one of Europe’s most-vaccinated populations, reported more than 332,000 new virus cases on Wednesday. The number set a European record for the highest single-day national count of confirmed cases.
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