Table 1.
Comparison of the clinical and laboratory features of influenza and other respiratory tract viruses
| RTI related with influenza viruses (n=70) | RTI related with non-influenza viruses (n=70) | p | |
|---|---|---|---|
| Age, median (the lowest-the highest) | 6.5 (2.5–16.0) | 4.5 (2.5–14.0) | <0.001 |
| Gender, male/female n (%) | 46/24 (65.7/34.3) | 36/34 (51.4–48.6) | 0.086 |
| Age group, n (%) | |||
| 2–5 years | 27 (38.6) | 42 (60) | 0.011 |
| >5 years | 43 (61.4) | 28 (40) | |
| Indoor exposure to smoking, n (%) | 24 (34.3) | 22 (31.4) | 0.719 |
| School/kindergarten, n (%) | 58 (82.9) | 41 (58.6) | 0.002 |
| Number of siblings, ≥2, n (%) | 25 (35.7) | 34 (48.6) | 0.123 |
| Contact with URTI, n (%) | 44 (62.9) | 34 (48.6) | 0.089 |
| Clinical Diagnosis, n (%) | |||
| URTI | 45 (64.3) | 47 (67) | |
| Acute bronchitis | 11 (15.7) | 9 (12.9) | |
| Bronchopneumoniae | 11 (15.7) | 6 (8.6) | 0.382 |
| Pneumoniae | 2 (2.9) | 4 (5.7) | |
| Bronchiolitis | 1 (1.4) | 4 (5.7) | |
| Presence of underlying disease, n (%) | 17 (24.3) | 11 (15.7) | 0.205 |
| Influenza-like illness, n (%) | 66 (94.3) | 52 (74.3) | 0.001 |
| Radiology, n (%) | (s=31) | (s=28) | |
| Normal | 13 (18.6) | 13 (18.6) | |
| Peribronchial infiltration | 12 (17.1) | 11 (15.7) | |
| Consolidation | 5 (7.1) | 3 (4.3) | 0.663 |
| Increased aeration | 1 (1.4) | 1 (1.4) | |
| Atelectasis | - | 1 (1.4) | |
| Laboratory, median (the lowest-the highest) | (n=59) | (n=58) | |
| Leukocytes | 7 500 (3 020–31 390) | 10 250 (3 500–25 500) | <0.001 |
| Neutrophils | 3 910 (700–27 720) | 5 730 (1 400–23 200) | 0.038 |
| Lymphocytes | 1 950 (500–6 100) | 2 450 (450–10 470) | 0.006 |
| CRP | 7 (0–74) | 18 (0–200) | 0.001 |
| Hospitalization, n (%) | 15 (21.4) | 19 (27.1) | 0.430 |
| Hospitalization in ICU, n (%) | 2 (2.9) | 1 (1.4) | 0.559 |
| Hospitalization time, days, median (the lowest-the highest) | 6 (2–12) | 5 (1–18) | 0.767 |
| Disease time, days, median (the lowest-the highest) | 7 (4–14) | 6 (4–21) | 0.078 |
CRP: C reactive protein; ICU: intensive care unit, n: number; RTI: respiratory tract infections