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    COVID-19 Blood test tube in doctor hand, Mers-CoV Coronavirus test Positive label in hospital blood test tube for analysis. 2019-nCoV virus infection originating in Wuhan, China

    COVID-19 Blood test tube in doctor hand, Mers-CoV Coronavirus test Positive label in hospital blood test tube for analysis. 2019-nCoV virus infection originating in Wuhan, China