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Coronavirus disease 2019 (COVID‐19) has now spread all over the world. The National Health Commission of the People's Republic of China reported 78 439 cured and discharged cases, 4634 deaths, 83 462 confirmed cases and 760 818 close contacts as of 25 June 2020. Joint detection of nucleic acids and antibodies has become an important laboratory diagnostic for COVID‐19 patients. Disease progression...
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