How worrying is the new coronavirus variant "Cicada"? Are children more susceptible to infection?
A highly mutated new coronavirus variant has been discovered in 23 countries and is being closely monitored by the World Health Organization.
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Source: BBC Chinese
一種高度變異的新冠病毒變種目前已在23個國家被發現，世界衛生組織正在密切監測。
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