TABLE 2.

Acute Respiratory Episode Type by Viral Etiology

Viral Etiology	ARI Episodes, n = 303	Bronchiolitis, n = 190	Hospitalizations, n = 36
Rhinovirus	125 (41)	76 (40)	12 (33)
RSV	20 (7)	13 (7)	9 (25)
Human metapneumovirus	7 (2)	8 (4)	1 (3)
Adenovirus	0	0	0
Influenza virus	5 (2)	4 (2)	0
Parainfluenza virus 1	3 (1)	2 (1)	1 (3)
Parainfluenza virus 2	0	0	0
Parainfluenza virus 3	12 (4)	8 (4)	1 (3)
Study virus-negative	142 (47)	79 (42)	19 (53)

All values are presented as no. (%). Percent episodes may exceed 100%, because coinfections are included under individual viruses.