CRP and respiratory tract infectious disorder: Children with HAdV showed increased inflammatory markers compared to children with other respiratory infections, as demonstrated by mean CRP (50.8 ± 54.2 versus 16.5 ± 33.8 mg/L, p < 0.001), procalcitonin (1.9 ± 3.3 versus 0.7 ± 1.2 ng/mL, p = 0.047) and fibrinogen levels (461.3 ± 126.3 versus 353.2 ± 137.0 mg/dl, p = 0.007).