Table 2.

Coappearance of viral pathogens in patients with respiratory tract infection.

			Number of specimens with indicated virus detected
Virus			Double infection with indicated virus
	Total	Alone	Adenovirus	Human bocavirus	Human enterovirus	Human metapneumovirus	Human rhinovirus	Influenza virus A	Influenza virus B	Influenza virus C	Parainfluenza virus 1	Parainfluenza virus 2	Parainfluenza virus 3	Respiratory syncytial
Adenovirus	12	7	X	0	0	0	2	0	0	2	0	0	1	0
Humanbocavirus	6	1	0	X	0	0	2, a	0	0	0	0	0	1, a	1
Human enterovirus*	7	5	0	0	X	0	0	0	0	1	0	0	1	0
Human metapneumovirus	7	4	0	0	0	X	2	0	0	0	0	0	1	0
Human rhinovirus	87	68	2	3, a	0	2	X	0	0	1	b	3b	7, a	0
Influenza virus A	3	2	0	0	0	0	0	X	0	0	0	1	0	0
Influenza virus B	2	1	0	0	0	0	0	0	X	0	0	0	1	0
Influenza virus C	12	8	2	0	1	0	1	0	0	X	0	0	0	0
Parainfluenza virus 1	16	14	0	0	0	0	B	0	0	0	X	1, b	0	0
Parainfluenza virus 2	21	15	0	0	0	0	3, b	0	0	0	1, b	X	1	0
Parainfluenza virus 3	50	36	1	1, a	1	1	7, a	0	1	0	0	1	X	0
Respiratorysyncytial virus	1	0	0	1	0	0	0	0	0	0	0	0	0	X

Two triple infections, one with bocavirus, human rhinovirus, and parainfluenza virus 3 (a) and the other with human rhinovirus, parainfluenza virus 1 and parainfluenza virus 2 (b) were detected.

*Only the “true HEV” positive specimens are included.