Renewed tests of blood samples collected in Italy as early as October 2019 have revived a debate over whether coronavirus was circulating in Europe before Chinese authorities confirmed the first case in Wuhan.
對最早于2019年10月在意大利采集的血液樣本重新進行的檢測重燃了一場辯論，其焦點問題是：在中國當局確認武漢首例病例之前，新冠病毒是否已在歐洲傳播？
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