A medical worker takes samples on imported fish for COVID-19 nucleic acid test at a refrigeration house in Lianyun district, Lianyungang, east China's Jiangsu province, Aug. 11, 2021. (Photo by Wang Chun/People's Daily Online)
By Shen Shaotie, People's Daily
Cold-chain products hold vital clues to the origins of COVID-19, and it ... Proceed to Read Full Article >>
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