Table 1. Detection of respiratory tract pathogens from 4242 pediatric patients with ARI by real-time PCR.

Pathogens#	infA	infB	RSV	EV	ADV	PIV1	PIV2	PIV3	PIV4	229E	OC43	NL63	HKU1	HBoV	HMPV	MP	CP	Detection rate in 2361positive samples, %
infA	428	16	63	32	12	6	4	7	0	5	18	4	2	7	7	19	0	18.1
infB		155	13	9	1	0	1	5	0	0	1	0	1	2	5	5	2	6.6
RSV			768	63	21	7	12	10	1	8	19	10	1	17	8	16	5	32.5
EV				313	16	12	1	10	1	3	9	5	0	10	10	10	2	13.3
ADV					213	1	3	3	1	3	4	5	1	7	5	10	2	9.0
PIV1						67	2	1	0	0	4	1	0	3	0	6	0	2.8
PIV2							51	3	0	2	8	0	0	1	1	2	0	2.2
PIV3								140	0	0	9	1	0	6	2	9	1	5.9
PIV4									11	0	0	0	0	0	0	1	0	0.5
229E										37	5	2	0	0	2	1	0	1.6
OC43											138	2	0	4	6	11	2	5.8
NL63												39	1	1	1	1	1	1.7
HKU1													17	3	0	5	0	0.7
HBoV														125	3	10	0	5.3
HMPV															173	4	0	7.3
MP																267	1	11.3
CP																	23	1.0
Single pathogen	264	102	555	170	140	35	23	89	7	16	62	12	6	68	126	174	11	78.7
Co-pathogens	164	53	213	143	73	32	28	51	4	21	76	27	11	57	47	93	12	21.3

^#229E: human coronavirus 229E, OC43: human coronavirus OC43, NL63: human coronavirus NL63, HKU1: human coronavirus HKU1.

*Boldface indicates total numbers of pathogens detected. Note: multiple pathogens were isolated from some samples.