| ACE2 | Human angiotensin-converting enzyme 2 |
| BCG | Bacillus calmette–guérin |
| CS | Citrate synthase |
| DTP | Diphtheria, tetanus and pertussis vaccine |
| HRP | Horseradish peroxidase |
| HSP | Heat shock protein |
| Ig | Immunoglobulin |
| IGRA | Interferon gamma release assay |
| IL | Interleukin |
| MMR | Measles, mumps and rubella vaccine |
| MS | Microsoft |
| MV | Measles vaccine |
| nAAb | Natural autoantibody |
| nAb | Natural antibody |
| NSE | Nonspecific side effect |
| PBS | Phosphate-buffered saline |
| PVA | Polyvinyl alcohol |
| RBD | Receptor-binding domain |
| RT | Room temperature |
| S1 | Spike glycoprotein 1 |
| SARS-CoV-2 | Severe acute respiratory syndrome coronavirus 2 |
| TMB | 3,3′,5,5′-tetramethylbenzidine |
| TNF-α | Tumor necrosis factor alpha |
| URIs | Upper respiratory infections |
| WB | Washing buffer |