1. Aged over 18 years, 2. Real-time fluorescent RT-PCR for respiratory or blood specimens to detect novel coronavirus nucleic acid positive, 3. The sequence of virus genes in respiratory or blood samples was highly homologous with the known novel coronavirus, 4. A common or severe type of new type of coronavirus pneumonia was diagnosed. The common patients diagnosed with novel coronavirus pneumonia that have fever, respiratory symptoms, and imaging shows pneumonia. Some severe patients could be included. Accord with any of the following: (1) Respiratory distress, RR >= 30 times / minute, (2) In resting state, means oxygen saturation <= 93%, (3) Arterial blood oxygen partial pressure (PaO2) / oxygen concentration (FiO2) <= 300mmHg.

1. Aged over 18 years, 2. Real-time fluorescent RT-PCR for respiratory or blood specimens to detect novel coronavirus nucleic acid positive, 3. The sequence of virus genes in respiratory or blood samples was highly homologous with the known novel coronavirus, 4. A common or severe type of new type of coronavirus pneumonia was diagnosed. The common patients diagnosed with novel coronavirus pneumonia that have fever, respiratory symptoms, and imaging shows pneumonia. Some severe patients could be included. Accord with any of the following: (1) Respiratory distress, RR >= 30 times / minute, (2) In resting state, means oxygen saturation <= 93%, (3) Arterial blood oxygen partial pressure (PaO2) / oxygen concentration (FiO2) <= 300mmHg.

1. Age over 18 years old, 2. Real-time fluorescent RT-PCR for respiratory or blood specimens to detect novel coronavirus nucleic acid positive, 3. The sequence of virus genes in respiratory or blood samples was highly homologous with the known novel coronavirus, 4. A common or severe type of new type of coronavirus pneumonia was diagnosed. The common patients diagnosed with novel coronavirus pneumonia that have fever, respiratory symptoms, and imaging shows pneumonia. Some severe patients could be included. Accord with any of the following: (1) Respiratory distress, RR >= 30 times / minute, (2) In resting state, means oxygen saturation <= 93%, (3) Arterial blood oxygen partial pressure (PaO2) / oxygen concentration (FiO2) <=300mmHg.

1. Age over 18 years old, 2. Real-time fluorescent RT-PCR for respiratory or blood specimens to detect novel coronavirus nucleic acid positive, 3. The sequence of virus genes in respiratory or blood samples was highly homologous with the known novel coronavirus, 4. A common or severe type of new type of coronavirus pneumonia was diagnosed. The common patients diagnosed with novel coronavirus pneumonia that have fever, respiratory symptoms, and imaging shows pneumonia. Some severe patients could be included. Accord with any of the following: (1) Respiratory distress, RR >= 30 times / minute, (2) In resting state, means oxygen saturation <= 93%, (3) Arterial blood oxygen partial pressure (PaO2) / oxygen concentration (FiO2) <=300mmHg.