Frequency of positive clinical and laboratory findings in suspected patients (n=130)
| Stages | Detected patients (%) | RT-PCR (n=30) |
| Stage 1 | 54 (40.9%) | 17 (56.7%) |
| 1. Decrease in LOC | 24 (18.2) | 7 (23.3%) |
| 2. Unstable hemodynamics | 32 (24.2) | 9 (30%) |
| 3. Life-saving surgery | 5 (3.8%) | 1 (3.3%) |
| 4. Both 1 and 2 | 5 (3.8%) | 3 (10%) |
| 5. Both 1 and 3 | 2 (1.5%) | 1 (3.3%) |
| Stage 2 | 40 (30.3%) | 9 (30%) |
| 1. History of respiratory symptoms | 25 (18.9%) | |
| 2. Epidemiological factors | 9 (6.8%) | |
| 3. Fever | 20 (15.2%) | |
| 4. RR >20 | 21 (15.9) | |
| 5. Sat O2 | 51 (38.6%) | |
| Stage 3 | 14 (10.6%) | 0 (0%) |
| 1. Leukocytosis | 23 (17.4%) | |
| 2. Lymphopenia | 27 (20.5%) | |
| 3. High ESR | 13 (9.8%) | |
| 4. High CRP | 23 (17.4%) | |
| Stage 4 | 22 (16.7%) | 2 (6.7%) |
| 1. Fever | 2 (1.5%) | 2 (6.7%) |
CRP, C-reactive peptide; ESR, erythrocyte sedimentation rate; LOC, level of consciousness; RR, respiratory rate; RT-PCR, reverse transcription-polymerase chain reaction.