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Researchers find coronavirus was circulating in Italy earlier than thought
https://www.reuters.com/article/health-coronavirus-italy-timing-idUSKBN27W1J2
Coronavirus traces found in March 2019 sewage sample, Spanish study shows
https://www.reuters.com/article/us-health-coronavirus-spain-science-idUSKBN23X2HQ
https://www.ub.edu/web/ub/en/menu_eines/noticies/2020/06/042.html
美国可是在世界各地有200+生物实验室的
另外疫情在湿冷的天气更容易爆发,武汉就是种气候,冬天阴冷潮湿,又没暖气。西班牙和意大利要温暖干燥得多。
…ROME (Reuters) - The new coronavirus was circulating in Italy in September 2019, a study by the National Cancer Institute (INT) of the Italian city of Milan shows, signaling that it might have spread beyond China earlier than thought.…
CNBC也有这样的说法 :
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