Table 2– Frequency of common respiratory viruses detected in per-nasal aspirates from 128 children with an asthma exacerbation
Viral respiratory infectionsCases n (%)
Virus-positive118 (92.2)
 HRV112 (87.5)
  New strains79 (61.7)
   HRVC76 (59.4)
   HRVA#3 (2.3)
  Classical serotypes, HRVA# or B31 (24.2)
  Unidentified2 (1.6)
 Other common respiratory viruses19 (14.8)
  RSV2 (1.6)
  PIV3 (2.3)
  InfV1 (0.8)
  AdV3 (2.3)
  hMPV5 (3.9)
  EnV5 (4.8)
  CoV1 (1.0)
  BoV1 (1.0)
 Multiple infections14 (10.9)
  HRV co-infection+13 (10.2)
  Dual infection§11 (8.6)
  Triple infectionƒ3 (2.3)
  • HRV: human rhinovirus; RSV: respiratory syncytial virus; PIV: parainfluenza virus; InfV: influenza virus; AdV: adenovirus; hMPV: human metapneumovirus; EnV: enterovirus; CoV: coronavirus; BoV: bocavirus. #: HRV infection was only with HRVA strain; : two cases had two non-HRV viruses; only 104 cases were tested for EnV, CoV and BoV; +: HRV co-infection does not include dual HRV infection; §: HRV/hMPV (n = 3), HRV/AdV (n = 2), HRV/RSV (n = 2), HRV/PIV (n = 2), HRV/EnV (n = 1) and HRV/HRV (n = 1; classical and new strain); ƒ: HRV/EnV/CoV (n = 1), HRV/hMPV/InfV (n = 1) and HRV/HRV/AdV (n = 1; new HRV strains).