Scientists monitor emerging COVID-19 variants based on suspicious genetic changes and then look for evidence to determine whether the new version is more infectious or causes more severe illness. Viruses evolve constantly and many new variants often fade away.
So far, the mu variant doesn’t seem to be spreading quickly: It accounts for fewer than 1% of COVID-19 cases globally. In Colombia, it may be responsible for about 39% of cases. Most countries remain concerned about the highly contagious delta variant; it is the dominant variant in almost all of the 174 countries where it’s been detected.
Officials have been tracking the mu variant in Europe, where it has been seen in about a dozen countries. The French Ministry of Health recently said the mu variant “does not seem to have increased recently” across Europe.
A report from England’s public health agency last month suggested the mu variant might be as resistant to vaccines as the worrisome beta variant first seen in South Africa, but said more real-world data was needed.
世衛官員指出，Mu變異毒株似乎正在南美洲部分國家崛起，但Delta病毒傳染性仍較高。WHO officials said the Mu variant appears to be rising in some countries in South America, but that the Delta variant still spreads far more easily.
世衛新冠疫情技術負責人瑪麗亞·克爾霍夫（Maria Van Kerkhove）表示：「Mu變異毒株對我們來說值得關注，理由是它的變異組合」，但也表示「它看起來並不流行」。
The Mu variant “is of interest to us because of the combination of mutations it has,” said WHO’s Maria Van Kerkhove. “But it doesn’t seem to be circulating.” Source article: https://chinapost.nownews.com/20210910-2762003
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