inclusion criteria:1.patient capable of giving consent, or, when the patient is not capable of giving consent, by his or her legal/authorized representatives prior to initiation of any study procedures. 2.male or female, between 18 and 65 years of age at the time of consent. 3.laboratory-confirmed sars-cov-2 infection as determined by rt-pcr in nasopharyngeal or oropharyngeal swabs \< 72 hours prior to enrollment. 4patients with asymptomatics or mild covid-19, including: 1. patients with asymptomatic infections refer to those with positive testing results in etiological detection of sars-cov-2 in swabs, but without any relevant clinical manifestations, such as self-perceived or clinically identified symptoms or signs, including fever, cough and sore throat, and without any typical imaging features of covid-19 in their ct scans. 2. patients with mild sars-cov-2 infections refer to those who are infected with sars-cov-2 presenting mild symptoms in accordance with diagnosis and treatment protocol for novel coronavirus pneumonia (trial revision 8): mild clinical symptoms, and no findings of pneumonia in chest ct images. -

inclusion criteria:1.patient capable of giving consent, or, when the patient is not capable of giving consent, by his or her legal/authorized representatives prior to initiation of any study procedures. 2.male or female, between 18 and 65 years of age at the time of consent. 3.laboratory-confirmed sars-cov-2 infection as determined by rt-pcr in nasopharyngeal or oropharyngeal swabs \< 72 hours prior to enrollment. 4patients with asymptomatics or mild covid-19, including: 1. patients with asymptomatic infections refer to those with positive testing results in etiological detection of sars-cov-2 in swabs, but without any relevant clinical manifestations, such as self-perceived or clinically identified symptoms or signs, including fever, cough and sore throat, and without any typical imaging features of covid-19 in their ct scans. 2. patients with mild sars-cov-2 infections refer to those who are infected with sars-cov-2 presenting mild symptoms in accordance with diagnosis and treatment protocol for novel coronavirus pneumonia (trial revision 8): mild clinical symptoms, and no findings of pneumonia in chest ct images. -

inclusion criteria:1.patient capable of giving consent, or, when the patient is not capable of giving consent, by his or her legal/authorized representatives prior to initiation of any study procedures. 2.male or female, between 18 and 65 years of age at the time of consent. 3.laboratory-confirmed sars-cov-2 infection as determined by rt-pcr in nasopharyngeal or oropharyngeal swabs < 72 hours prior to enrollment. 4patients with asymptomatics or mild covid-19, including: patients with asymptomatic infections refer to those with positive testing results in etiological detection of sars-cov-2 in swabs, but without any relevant clinical manifestations, such as self-perceived or clinically identified symptoms or signs, including fever, cough and sore throat, and without any typical imaging features of covid-19 in their ct scans. patients with mild sars-cov-2 infections refer to those who are infected with sars-cov-2 presenting mild symptoms in accordance with diagnosis and treatment protocol for novel coronavirus pneumonia (trial revision 8): mild clinical symptoms, and no findings of pneumonia in chest ct images. -

inclusion criteria:1.patient capable of giving consent, or, when the patient is not capable of giving consent, by his or her legal/authorized representatives prior to initiation of any study procedures. 2.male or female, between 18 and 65 years of age at the time of consent. 3.laboratory-confirmed sars-cov-2 infection as determined by rt-pcr in nasopharyngeal or oropharyngeal swabs < 72 hours prior to enrollment. 4patients with asymptomatics or mild covid-19, including: patients with asymptomatic infections refer to those with positive testing results in etiological detection of sars-cov-2 in swabs, but without any relevant clinical manifestations, such as self-perceived or clinically identified symptoms or signs, including fever, cough and sore throat, and without any typical imaging features of covid-19 in their ct scans. patients with mild sars-cov-2 infections refer to those who are infected with sars-cov-2 presenting mild symptoms in accordance with diagnosis and treatment protocol for novel coronavirus pneumonia (trial revision 8): mild clinical symptoms, and no findings of pneumonia in chest ct images. -

inclusion criteria:1.patient capable of giving consent, or, when the patient is not capable of giving consent, by his or her legal/authorized representatives prior to initiation of any study procedures. 2.male or female, between 18 and 65 years of age at the time of consent. 3.laboratory-confirmed sars-cov-2 infection as determined by rt-pcr in nasopharyngeal or oropharyngeal swabs < 72 hours prior to enrollment. 4patients with asymptomatics or mild covid-19, including: 1. patients with asymptomatic infections refer to those with positive testing results in etiological detection of sars-cov-2 in swabs, but without any relevant clinical manifestations, such as self-perceived or clinically identified symptoms or signs, including fever, cough and sore throat, and without any typical imaging features of covid-19 in their ct scans. 2. patients with mild sars-cov-2 infections refer to those who are infected with sars-cov-2 presenting mild symptoms in accordance with diagnosis and treatment protocol for novel coronavirus pneumonia (trial revision 8): mild clinical symptoms, and no findings of pneumonia in chest ct images. -

inclusion criteria:1.patient capable of giving consent, or, when the patient is not capable of giving consent, by his or her legal/authorized representatives prior to initiation of any study procedures. 2.male or female, between 18 and 65 years of age at the time of consent. 3.laboratory-confirmed sars-cov-2 infection as determined by rt-pcr in nasopharyngeal or oropharyngeal swabs < 72 hours prior to enrollment. 4patients with asymptomatics or mild covid-19, including: 1. patients with asymptomatic infections refer to those with positive testing results in etiological detection of sars-cov-2 in swabs, but without any relevant clinical manifestations, such as self-perceived or clinically identified symptoms or signs, including fever, cough and sore throat, and without any typical imaging features of covid-19 in their ct scans. 2. patients with mild sars-cov-2 infections refer to those who are infected with sars-cov-2 presenting mild symptoms in accordance with diagnosis and treatment protocol for novel coronavirus pneumonia (trial revision 8): mild clinical symptoms, and no findings of pneumonia in chest ct images. -