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As China imposes fresh lockdowns and travel restrictions amid Covid surge, the country has detected new Omicron sub-variants BF.7 and BA.5.1.7, which are highly infectious with greater transmissibility. BF.7 (also known as BA.2.75.2) is a sub-lineage of the Covid Omicron variant BA.5.2.1. According to local reports, the BF.7 was detected on October 4 in Yantai and Shaoguan city. The subvariant BA.5.1.7 was detected in the Chinese mainland for the first time, as reported by Global Times.
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