Table 2.

Frequencies of viral detection of single agents.

Virus	n (%)
Respiratory syncytial virus type A (RSVA)	320 (22.8)
Human enterovirus/human rhinovirus (HEV/HRV)	233 (16.6)
Metapneumovirus	80 (5.7)
Influenza A virus	41 (2.9)
Parainfluenza virus type 3 (PIV3)	35 (2.5)
Adenovirus	31 (2.2)
Parainfluenza virus type 4 (PIV4)	21 (1.5)
Parainfluenza virus type 2 (PIV2)	12 (0.9)
Respiratory syncytial virus type B (RSVB)	12 (0.9)
Human coronavirus NL63 (CoVNL63)	11 (0.8)
Influenza B virus	10 (0.7)
Human coronavirus OC43 (CoVOC43)	9 (0.6)
Parainfluenza virus type 1 (PIV1)	8 (0.6)
Bocavirus	6 (0.4)
Human coronavirus 229E (CoV229E)	4 (0.3)
Human coronavirus HKU1 (CoVHKU1)	2 (0.1)
Negative	259 (18.4)
Total	835 (77.9)