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. 2008 Sep;43(1):120-2.
doi: 10.1016/j.jcv.2008.04.008. Epub 2008 Jun 5.

Upper respiratory virus detection without parent-reported illness in children is virus-specific

Cuneyt M Alper  1 , William J Doyle, Birgit Winther, J Owen Hendley
Affiliations

Upper respiratory virus detection without parent-reported illness in children is virus-specific

Cuneyt M Alper et al. J Clin Virol. 2008 Sep.

Abstract

Background: Viral upper respiratory tract infection (vURI) may or may not present with a cold/flu-like illness (CFLI).

Objectives: For common upper respiratory viruses that cause vURIs, to determine the relative frequencies of virus detection by PCR in subjects with and without CFLIs.

Study design: Prospective follow-up of 170 children aged 1-8.6 years through the CFLI season by daily parental diary for CFLI episodes and nasal secretion sampling using PCR assays for adenovirus, coronavirus (types 229E and OC43), influenza virus (types A and B), parainfluenza (types 1-3) virus, rhinovirus, and respiratory syncytial virus (RSV).

Results: Virus was detected in 415 of 956 independent assays: 425 CFLI episodes and 531 non-CFLI periods were sampled; samples from 270 (64%) CFLI episodes and 145 (27%) non-CFLI periods contained virus detected by PCR. Rhinovirus was most frequently detected at 64%, followed by mixed viruses at 12%, RSV at 7%, and the other viruses at 3-5% of all detections. About 85% of RSV, influenza A and adenovirus detections were associated with a CFLI, whereas less than 62% of other virus detections were associated with CFLI.

Conclusions: The frequency of PCR virus detection without CFLI was different among viruses. This introduces virus-specific biases to estimating the frequencies of specific complications attributable to a vURI when ascertained by CFLI identification.

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