Table 1.

Distribution of respiratory pathogens in 11,399 pediatric patients hospitalized with acute respiratory illness

Pathogen	HBoV1	infA	infB	RSV	EV	HRVa	ADV	PIV1	PIV2	PIV3	PIV4	229E	OC43	NL63	HKU1	HMPV	MP	CP	Positive rate, %
HBoV1	248	13	4	29	15	17	14	4	3	10	1	0	9	3	1	7	14	0	2.2
infA		839	34	95	41	8	23	9	7	11	0	7	38	4	4	12	46	1	7.4
infB			300	25	9	6	4	1	1	6	0	0	9	0	1	5	15	2	2.6
RSV				1690	73	45	38	9	13	14	3	10	29	10	3	16	38	8	14.8
EV					498	16	24	14	2	13	1	4	10	6	1	10	21	5	4.4
HRVa						402	14	3	2	12	2	2	11	1	1	3	21	6	5.0
ADV							621	5	3	7	2	3	14	5	2	9	36	3	5.4
PIV1								116	2	2	0	2	5	1	0	1	9	0	1.0
PIV2									72	3	0	2	9	0	0	2	3	0	0.6
PIV3										296	0	1	15	1	1	3	15	1	2.6
PIV4											25	1	1	0	0	0	3	0	0.2
229E												64	14	2	0	3	3	0	0.6
OC43													346	2	1	14	27	3	3.0
NL63														60	1	1	3	1	0.5
HKU1															38	1	3	1	0.3
HMP																321	9	0	2.8
MP																	760	2	6.7
CP																		77	0.7
Single infection	136	546	203	1314	286	261	458	67	35	203	13	26	185	28	19	243	531	51	40.4
Co-infection	112	293	97	376	212	141	163	49	37	93	12	38	161	32	19	78	229	26	8.8

Data are number in each group, except where specifically stated. HBoV1 human bocavirus 1, InfA influenza A virus, InfB influenza B virus, RSV respiratory syncytial virus, EV enterovirus, HRV human rhinovirus, PIV1–4 parainfluenza 1–4, ADV adenovirus, HMPV human metapneumovirus, 229E human coronavirus 229E, OC43 human coronavirus OC43, NL63 human coronavirus NL63, HKU1 human coronavirus HKU1, MP Mycoplasma pneumoniae, CP Chlamydophila pneumoniae. ^aHRV was detected since January 2012, and a total of 8084 cases were collected