The U.S. is anticipating holiday travel at almost pre-pandemic levels, with an expected 109 million American travelers. But the spread of the Omicron COVID-19 variant, which has been detected in 89 countries so far, could complicate travel plans worldwide.

Here's a look at what's happening around the world as countries find themselves facing a surge in new cases, new restrictions, and a scramble to prevent the Omicron variant from spreading further.

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