In less than two months since it was first reported, the highly contagious omicron variant of COVID-19 is storming the world, driving record-breaking case counts in the U.S. and Europe while breaking through heavily guarded borders elsewhere, including China.
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China in hand-to-hand combat with omicron
Experts call for balancing socioeconomic benefits with virus control
The omicron mutation's rapid replication and less obvious symptoms make it much more difficult to track and control. A testing site in Tianjin, China, on Jan. 12. (China Daily via Reuters)
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