All inclusion criteria must be met to qualify for inclusion: 1. The age should be over 18 years old and under 70 years old, with no gender limit. Those who meet the diagnostic criteria of clinical pneumonia 2. According to the clinical diagnosis of viral pneumonia: (1) Fever (oral temperature >= 38 degrees C, or axillary temperature >= 37.5 degrees C, or fever history within 24 hours before baseline, whether taking antipyretics or not, or having fever symptoms within 48 hours before baseline), with or without respiratory symptoms (respiratory rate > 30 beats / min), (2) White blood cell count was normal or low, with or without thrombocytopenia, (3) Chest imaging (chest CT): unilateral or bilateral chest imaging showed multiple (at least 2 lesions) or diffuse patchy or ground glass infiltration (with or without consolidation), 3. SARS-COV-2 is positive for pathogens. After respiratory virus screening, oropharyngeal test pieces with one or more virus nucleic acid positive can be selected into the group. The SARS-COV-2 in the samples were further evaluated by qPCR according CT valune, 4. Prior to the start of the study, a written informed letter should be signed (for the incompetent subjects, if the researcher thinks that it is in their own interests to participate in the trial, the informed consent shall be signed by the legal guardian of the subject, and it shall be explained in the original medical record and other relevant documents).

All inclusion criteria must be met to qualify for inclusion: 1. The age should be over 18 years old and under 70 years old, with no gender limit. Those who meet the diagnostic criteria of clinical pneumonia 2. According to the clinical diagnosis of viral pneumonia: (1) Fever (oral temperature >= 38 degrees C, or axillary temperature >= 37.5 degrees C, or fever history within 24 hours before baseline, whether taking antipyretics or not, or having fever symptoms within 48 hours before baseline), with or without respiratory symptoms (respiratory rate > 30 beats / min), (2) White blood cell count was normal or low, with or without thrombocytopenia, (3) Chest imaging (chest CT): unilateral or bilateral chest imaging showed multiple (at least 2 lesions) or diffuse patchy or ground glass infiltration (with or without consolidation), 3. SARS-COV-2 is positive for pathogens. After respiratory virus screening, oropharyngeal test pieces with one or more virus nucleic acid positive can be selected into the group. The SARS-COV-2 in the samples were further evaluated by qPCR according CT valune, 4. Prior to the start of the study, a written informed letter should be signed (for the incompetent subjects, if the researcher thinks that it is in their own interests to participate in the trial, the informed consent shall be signed by the legal guardian of the subject, and it shall be explained in the original medical record and other relevant documents).

All inclusion criteria must be met to qualify for inclusion: 1) The age should be over 18 years old and under 70 years old, with no gender limit. Those who meet the diagnostic criteria of clinical pneumonia 2) According to the clinical diagnosis of viral pneumonia: A. Fever (oral temperature >= 38 degrees C, or axillary temperature >= 37.5 degrees C, or fever history within 24 hours before baseline, whether taking antipyretics or not, or having fever symptoms within 48 hours before baseline), with or without respiratory symptoms (respiratory rate > 30 beats / min), B. White blood cell count was normal or low, with or without thrombocytopenia, C. Chest imaging (chest CT): unilateral or bilateral chest imaging showed multiple (at least 2 lesions) or diffuse patchy or ground glass infiltration (with or without consolidation), 3) SARS-COV-2 is positive for pathogens. After respiratory virus screening, oropharyngeal test pieces with one or more virus nucleic acid positive can be selected into the group. The SARS-COV-2 in the samples were further evaluated by qPCR according CT valune, 4) Prior to the start of the study, a written informed letter should be signed (for the incompetent subjects, if the researcher thinks that it is in their own interests to participate in the trial, the informed consent shall be signed by the legal guardian of the subject, and it shall be explained in the original medical record and other relevant documents).

All inclusion criteria must be met to qualify for inclusion: 1) The age should be over 18 years old and under 70 years old, with no gender limit. Those who meet the diagnostic criteria of clinical pneumonia 2) According to the clinical diagnosis of viral pneumonia: A. Fever (oral temperature >= 38 degrees C, or axillary temperature >= 37.5 degrees C, or fever history within 24 hours before baseline, whether taking antipyretics or not, or having fever symptoms within 48 hours before baseline), with or without respiratory symptoms (respiratory rate > 30 beats / min), B. White blood cell count was normal or low, with or without thrombocytopenia, C. Chest imaging (chest CT): unilateral or bilateral chest imaging showed multiple (at least 2 lesions) or diffuse patchy or ground glass infiltration (with or without consolidation), 3) SARS-COV-2 is positive for pathogens. After respiratory virus screening, oropharyngeal test pieces with one or more virus nucleic acid positive can be selected into the group. The SARS-COV-2 in the samples were further evaluated by qPCR according CT valune, 4) Prior to the start of the study, a written informed letter should be signed (for the incompetent subjects, if the researcher thinks that it is in their own interests to participate in the trial, the informed consent shall be signed by the legal guardian of the subject, and it shall be explained in the original medical record and other relevant documents).