inclusion criteria: 1. age ≥ 18 years; 2. clinically diagnosed patients with new type of coronavirus pneumonia, including: in accordance with the criteria for suspected cases, have one of the following etiology evidence: ① real-time fluorescence rt-pcr of respiratory specimens or blood specimens for detection of new coronavirus nucleic acid; ② sequencing of viral genes in respiratory specimens or blood specimens, highly homologous to known new coronavirus 3. the time interval between the onset of symptoms and random enrollment is within 7 days. the onset of symptoms is mainly based on fever. if there is no fever, cough, diarrhea or other related symptoms can be used.

inclusion criteria: 1. age ≥ 18 years; 2. clinically diagnosed patients with new type of coronavirus pneumonia, including: in accordance with the criteria for suspected cases, have one of the following etiology evidence: ① real-time fluorescence rt-pcr of respiratory specimens or blood specimens for detection of new coronavirus nucleic acid; ② sequencing of viral genes in respiratory specimens or blood specimens, highly homologous to known new coronavirus 3. the time interval between the onset of symptoms and random enrollment is within 7 days. the onset of symptoms is mainly based on fever. if there is no fever, cough, diarrhea or other related symptoms can be used.

inclusion criteria: age ≥ 18 years; clinically diagnosed patients with new type of coronavirus pneumonia, including: in accordance with the criteria for suspected cases, have one of the following etiology evidence: ① real-time fluorescence rt-pcr of respiratory specimens or blood specimens for detection of new coronavirus nucleic acid; ② sequencing of viral genes in respiratory specimens or blood specimens, highly homologous to known new coronavirus the time interval between the onset of symptoms and random enrollment is within 7 days. the onset of symptoms is mainly based on fever. if there is no fever, cough, diarrhea or other related symptoms can be used.

inclusion criteria: age ≥ 18 years; clinically diagnosed patients with new type of coronavirus pneumonia, including: in accordance with the criteria for suspected cases, have one of the following etiology evidence: ① real-time fluorescence rt-pcr of respiratory specimens or blood specimens for detection of new coronavirus nucleic acid; ② sequencing of viral genes in respiratory specimens or blood specimens, highly homologous to known new coronavirus the time interval between the onset of symptoms and random enrollment is within 7 days. the onset of symptoms is mainly based on fever. if there is no fever, cough, diarrhea or other related symptoms can be used.

inclusion criteria: 1. age ≥ 18 years; 2. clinically diagnosed patients with new type of coronavirus pneumonia, including: in accordance with the criteria for suspected cases, have one of the following etiology evidence: ① real-time fluorescence rt-pcr of respiratory specimens or blood specimens for detection of new coronavirus nucleic acid; ② sequencing of viral genes in respiratory specimens or blood specimens, highly homologous to known new coronavirus 3. the time interval between the onset of symptoms and random enrollment is within 7 days. the onset of symptoms is mainly based on fever. if there is no fever, cough, diarrhea or other related symptoms can be used.

inclusion criteria: 1. age ≥ 18 years; 2. clinically diagnosed patients with new type of coronavirus pneumonia, including: in accordance with the criteria for suspected cases, have one of the following etiology evidence: ① real-time fluorescence rt-pcr of respiratory specimens or blood specimens for detection of new coronavirus nucleic acid; ② sequencing of viral genes in respiratory specimens or blood specimens, highly homologous to known new coronavirus 3. the time interval between the onset of symptoms and random enrollment is within 7 days. the onset of symptoms is mainly based on fever. if there is no fever, cough, diarrhea or other related symptoms can be used.