Table 4.
Comparison of demographic, clinical, and laboratory features of MERS-CoV with SARS-CoV infection.a
| Variables | MERS-CoV | SARS-CoV |
|---|---|---|
|
| ||
| Demographics | ||
| Number of cases | 136 | 752 |
| Incubation periods (days; mean 95%) | 5.2 (1.9–14.7); range 2–13 | 4.6(3.8–5.8); range 2–14 |
| Age of patient | 56 (mean 14–94) | 39.9 (mean 1–91) |
| Percent of children | 5–6% | 5–7% |
| See distribution no. | 83 male, 53 female | 343 males, 409 females |
| Ratio of male to female | 1.6:1 | 0.84:1 |
| Clinical featuresb (%) | ||
| Fever >38°C | 98 | 99.9 |
| Chills or rigors | 87.1 | 51.5 |
| Myalgia | 32.1 | 48.5 |
| Malaise | 38 | 58.8 |
| Cough | 83 | 65.5 |
| Rhinorrhea | 46 | 13.8 |
| Sore throat | 21 | 16.5 |
| Nausea or vomiting | 21 | 26.7 |
| Diarrhea | 26 | 20.1 |
| Mortality | 43 | 0–40 |
| Laboratory Resultsb (%) | ||
| Leukopenia (<40.0×109 cells/L) | 14 | 24.2 |
| Lymphopenia (1.5×109 cells/L) | 34 | 66.4 |
| Thrombocytopenia (<140×109 cells/L) | 36 | 29.7 |
| Elevated serum alanine aminotransferase level | 11 | 44.1 |
| Elevated serum lactate dehydrogenase level | 49 | 45.6 |
| Radiographic manifestationsb (%) | ||
| Initial abnormal chest radiograph | 100 | 60–100 |
a
Modify from R42, 43.
b
Based on published papers.
MERS-CoV: Middle East respiratory syndrome coronavirus, SARS-CoV: severe acute respiratory syndrome coronavirus.