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negative conversion in sputum samples were significantly later than those with obvious lung injury (27 days [range 18 to 36]; 17 days, [range 6 to 25], P = .021). The negative conversion of SARS-CoV-2 RNA in stool was significant later than in sputum.There were various clinical manifestations after SARS-CoV-2 infection, even if they were infected by the same source of infection in the same place. The presence of SARS-CoV-2 virus RNA in stool samples was longer than that in respiratory tract. The present study aimed to analyze the posit