| SARS-CoV-2 | Severe Acute Respiratory Syndrome Coronavirus 2 |
| COVID-19 | Corona virus disease 2019 |
| MERS | Middle East respiratory syndrome |
| VAERS | Vaccine Adverse Event Reporting System |
| COPD | Chronic obstructive pulmonary disease |
| DT | Decision Tree |
| RF | Random Forest |
| SVM | Support Vector Machine |
| GBM | Gradient Boosting Machine |
| XGB | Extreme Gradient Boosting Machine |
| LGBM | Light Gradient Boosting Machine |