1. age more than 18 years old 2. Anti-SAR-CoV-2 negative 3. diabetes mellitus or 4. cirrhosis or 5. solid cancer or 6. hematologic malignancy or 7. chronic kidney disease (GFR &lt,60 ml/mi/1.73 m2) 8. rheumatological disease or 9. cardiovascular disease

1. age more than 18 years old 2. Anti-SAR-CoV-2 negative 3. diabetes mellitus or 4. cirrhosis or 5. solid cancer or 6. hematologic malignancy or 7. chronic kidney disease (GFR &lt,60 ml/mi/1.73 m2) 8. rheumatological disease or 9. cardiovascular disease