Characteristics of the study population in terms of age and White blood cells count
| Variable | Bronchiolitis* (n=26) | Healthy controls* (n=37) | P value† |
| Age (days) | 85±25.20 | 98±38.40 | 0.285 |
| White blood cells count (cells ×109/L) | 9750±780 | 8580±1010 | 0.286 |
| Neutrophils (cells ×109/L) | 2712±1296 | 3325±1185 | 0.645 |
| Lymphocytes (cells ×109/L) | 5305±2182 | 4190±1683 | 0.021 |
| Eosinophils (cells ×109/L) | 332±90 | 460±95 | 0.315 |
| Monocytes (cells ×109/L) | 1401±1077 | 605±256 | <0.001 |
*Data are reported as mean and SD.
†Mann-Whitney U test.