Historical data on Coronavirus epidemiology and transmission [71, 72]
| Coronavirus | Affected host | Intermediate host | Potential reservoir host | Disease | Cell receptor | |
|---|---|---|---|---|---|---|
| SARS-CoV | Humans | Himalayan palm civet/raccoon | Bat | SARS | ACE2 | |
| MERS-CoV | Humans | Dromedary camels | Bat | MERS | DPP4 (Dipeptidyl peptidase 4) | |
| SARS-CoV-2 | Humans | NA (No report) | NA (No report) | COVID-19 | ACE2 | |
Common reported symptoms of COVID-19
| Study | Chen N. et al., [58] | Huang C. et al., [5] | Alsofayan Y.M. et al., [68] | Shabrawishi M. et al., [52] |
|---|---|---|---|---|
| Patient count | 99 | 41 | 1519 | 150 |
| Age (mean, year) | 55.5 | 49 | 37 | 46.1 |
| Fever | 83% | 98% | 86% | 49% |
| Cough | 82% | 76% | 89% | 49% |
| Shortness of breath | 31% | 55% | – | 20% |
| Myalgia | 11% | 44% | 29% | 3% |
| Hemoptysis | – | 5% | – | 0.4% |
| Sputum production | – | 28% | – | 3% |
| Confusion | 9% | – | – | – |
| Sore throat | 5% | – | 82% | 16% |
| Rhinorrhea | 4% | – | 72% | 6% |
| Chest pain | 2% | – | – | – |
| Diarrhea | – | 3% | 14% | 1% |
| Headache | – | 8% | 27% | 3% |