1) Patients who are positive for SARS-CoV-2 by PCR or antigen test 2) Patients who do not need continuous (24h) oxygen inhalation3) Patients who can eat and drink4) Patients older or equal to 20 years old and younger than 75 years old5) Patients who can sign the informed consent form by themselves

1) Patients who are positive for SARS-CoV-2 by PCR or antigen test 2) Patients who do not need continuous (24h) oxygen inhalation3) Patients who can eat and drink4) Patients older or equal to 20 years old and younger than 75 years old5) Patients who can sign the informed consent form by themselves

1) Patients who are positive for SARS-CoV-2 by PCR or antigen test2) Patients who are diagnosed with pneumonia by Chest X-ray or CT 3) Patients who do not need continuous (24h) oxygen inhalation4) Patients who can eat and drink5) Patients older or equal to 20 years old and younger than 75 years old6) Patients who can sign the informed consent form by themselves

1) Patients who are positive for SARS-CoV-2 by PCR or antigen test2) Patients who are diagnosed with pneumonia by Chest X-ray or CT 3) Patients who do not need continuous (24h) oxygen inhalation4) Patients who can eat and drink5) Patients older or equal to 20 years old and younger than 75 years old6) Patients who can sign the informed consent form by themselves

1) Patients who are positive for SARS-CoV-2 by PCR or antigen test2) Patients who are diagnosed with pneumonia by Chest X-ray or CT 3) Patients who do not need continuous (24h) oxygen inhalation4) Pregnancy test-negative for premenopausal women 5) Patients who can eat and drink6) Patients older or equal to 20 years old and younger than 75 years old7) Patients who can sign the informed consent form by themselves

1) Patients who are positive for SARS-CoV-2 by PCR or antigen test2) Patients who are diagnosed with pneumonia by Chest X-ray or CT 3) Patients who do not need continuous (24h) oxygen inhalation4) Pregnancy test-negative for premenopausal women 5) Patients who can eat and drink6) Patients older or equal to 20 years old and younger than 75 years old7) Patients who can sign the informed consent form by themselves