Title Human rhinoviruses in INDIS-study material-evidence for recovery of viable rhinovirus from fecal specimens.
Author Savolainen-Kopra, Carita; Simonen-Tikka, Marja-Leena; Klemola, Paivi; Blomqvist, Soile; Suomenrinne, Sointu; Nanto-Salonen, Kirsti; Simell, Olli; Roivainen, Merja
Journal J Med Virol Publication Year/Month 2013-Aug
PMID 23765783 PMCID -N/A-
Affiliation 1.Department of Infectious Disease Surveillance and Control, Virology Unit, National Institute for Health and Welfare (THL), Helsinki, Finland.

The significance of human rhinoviruses (HRV) as prevailing respiratory pathogens has sharpened during the recent years followed by implementation of molecular methods in detection. Rhinoviruses are detected exceedingly in hospitalized cases of respiratory infection with varying severity, in addition to being frequent in cases of common cold. The aim of this study was to evaluate occurrence of HRV in a prospective study material. The prospective INDIS material comprises nasopharyngeal (N=429) and fecal (N=425) specimens from children under 11 years of age collected during any clinical infection. Validated real-time RT-PCR assays were applied for the detection of HRV. HRV were detected numerously not only in the nasopharyngeal specimens, but a myriad also in fecal specimens, 236 (55.0%) and 149 (35.1%), respectively, fecal findings actually beyond anticipation. A total of 13 of HRV-positive fecal specimens were selected for genetic typing in the VP4/VP2 coding region. HRV-A strains were detected in seven specimens: HRV-A9, -A10, -A24, -A49, -A56 and -A82. HRV-B-strains were detected three times: HRV-B42 and -B79, and HRV-C twice: HRV-C12 and HRV-Cpat4. HRV-B42 also showed cytopathic effect in cell culture, confirmed by real-time RT-PCR and VP4/VP2 sequencing, suggesting presence of viable HRV in fecal specimens.

StrainID RV Species Serotype Length(nt) Country Year Strain Name
UNS03523 Unclassified None 437 Finland 2011 INDIS-U429
UNS03524 Unclassified None 448 Finland 2012 INDIS-U114
UNS03525 Unclassified None 447 Finland 2010 INDIS-U196
UNS03526 Unclassified None 449 Finland 2010 INDIS-U211
UNS03527 Unclassified None 432 Finland 2011 INDIS-U329
UNS03528 Unclassified None 435 Finland 2011 INDIS-U330
UNS03529 Unclassified None 443 Finland 2011 INDIS-U352
UNS03530 Unclassified None 437 Finland 2011 INDIS-U377
UNS03531 Unclassified None 435 Finland 2011 INDIS-U387
UNS03532 Unclassified None 436 Finland 2011 INDIS-U404
UNS03533 Unclassified None 437 Finland 2011 INDIS-U407
UNS03534 Unclassified None 437 Finland 2011 INDIS-U419
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