TABLE 2.

Viruses identified in nasopharyngeal aspirate specimens obtained from 4,181 patients hospitalized for acute respiratory tract infections

VirusNo. (%) of patients infected
CoV-HKU113 (0.3)
HCoV-OC4353 (1.3)
HCoV-229E4 (0.1)
HCoV-NL6317 (0.4)
Influenza A virus545 (13.0)
Influenza B virus120 (2.9)
Adenovirus210 (5.0)
Human parainfluenza virus 131 (0.7)
Human parainfluenza virus 28 (0.2)
Human parainfluenza virus 3183 (4.4)
Respiratory syncytial virus420 (10.0)
Human metapneumovirus117 (2.8)
None2,460 (58.8)