Table 1.

Clinical features of children with respiratory infections or respiratory symptoms on admission during the study period (N = 1757).

Characteristics	Median/number	IQR/%
Age (months)	18	10–39
<2 months	127	7.2
2–5 months	170	9.7
6–11 months	233	13.3
12–23 months	506	28.8
>24 months	719	40.9
Sex (male)	1004	57.1
Period from onset to hospitalization (day)	3	2–5
Hospitalization period (day)	4	3–5
Fever	1570	89.4
Rhinorrhea	1189	67.7
Cough	1530	87.1
Wheezing	383	21.8
WBC (/μL)	10100	7300–13800
CRP (mg/dL)	1.3	0.5–3.3
Intensive care in PICU	5	0.29
Diagnosis
Tympanitis	34	1.9
URI	300	17.1
Croup	32	1.8
LRI	1359	77.3
Virus detection	1272	72.4
Single	789	44.9
Double	372	21.2
Triple	85	4.8
Quadruple	21	1.2
Quintuple	4	0.2
Qextuple	1	0.06
RSV-A	289	16.4
RSV-B	350	19.9
Flu A	60	3.4
Flu B	25	1.4
Flu C	9	0.5
HCoV-HKU1	23	1.3
HCoV-OC43	25	1.4
HCoV-NL63	26	1.5
HCoV-229E	16	0.9
hMPV	160	9.1
HPIV-1	33	1.9
HPIV-2	12	0.7
HPIV-3	104	5.9
HPIV-4	27	1.5
ADV-2	190	10.8
ADV-4	79	4.5
HBoV	236	13.4
HRV	234	13.3

Data are shown as median (IQR) or number (%). The denominator for each percentage calculation is 1757, which is the total number of patients included in this study. The number of patients in whom viruses were detected included those with single and multiple virus detections.

IQR, interquartile range; WBC, white blood cell; CRP, C-reactive protein; PICU, pediatric intensive care unit; URI, upper respiratory infection; and LRI, lower respiratory infection; RSV, respiratory syncytial virus; Flu, influenza virus; HCoV, human coronavirus; hMPV, human metapneumovirus; human HPIV, parainfluenza virus; ADV, adenovirus; HBoV, human bocavirus; and HRV, human rhinovirus.