inclusion criteria: * 18 years ≤subject ≤ 75 years, male and/or female; * clinical confirmation of covid-19 patients in accordance with novel coronavirus diagnosis and treatment protocol (trial version 8) of the nhc * participants must be able to understand and willing to participate in this research, this study and signed informed consent form (if incapacitated subjects, the researchers believe the subjects to the test in its own interests, should be signed by its legal guardian informed consent, or telephone inform consent (recording) and note it in the original medical records and other relevant documents)

inclusion criteria: * 18 years ≤subject ≤ 75 years, male and/or female; * clinical confirmation of covid-19 patients in accordance with novel coronavirus diagnosis and treatment protocol (trial version 8) of the nhc * participants must be able to understand and willing to participate in this research, this study and signed informed consent form (if incapacitated subjects, the researchers believe the subjects to the test in its own interests, should be signed by its legal guardian informed consent, or telephone inform consent (recording) and note it in the original medical records and other relevant documents)

inclusion criteria: - 18 years ≤subject ≤ 75 years, male and/or female; - clinical confirmation of covid-19 patients in accordance with novel coronavirus diagnosis and treatment protocol (trial version 8) of the nhc - participants must be able to understand and willing to participate in this research, this study and signed informed consent form (if incapacitated subjects, the researchers believe the subjects to the test in its own interests, should be signed by its legal guardian informed consent, or telephone inform consent (recording) and note it in the original medical records and other relevant documents)

inclusion criteria: - 18 years ≤subject ≤ 75 years, male and/or female; - clinical confirmation of covid-19 patients in accordance with novel coronavirus diagnosis and treatment protocol (trial version 8) of the nhc - participants must be able to understand and willing to participate in this research, this study and signed informed consent form (if incapacitated subjects, the researchers believe the subjects to the test in its own interests, should be signed by its legal guardian informed consent, or telephone inform consent (recording) and note it in the original medical records and other relevant documents)