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The viral aetiology of croup and recurrent croup
  1. Sion Wall (sion.wall{at}cardiffandvale.wales.nhs.uk)
  1. Child Health, Wales College of Medicine, Cardiff University, Cardiff CF14 4XN, Wales, UK, United Kingdom
    1. Dennis Wat (denniswat118{at}hotmail.com)
    1. Child Health, Wales College of Medicine, Cardiff University, Cardiff CF14 4XN, Wales, UK, United Kingdom
      1. Brad Spiller (brad.spiller{at}cardiffandvale.wales.nhs.uk)
      1. Child Health, Wales College of Medicine, Cardiff University, Cardiff CF14 4XN, Wales, UK, United Kingdom
        1. Colin Gelder (colin.gelder{at}cardiffandvale.wales.nhs.uk)
        1. Department of Respiratory Medicine, Llandough Hospital, Penarth CF64 2XX, Wales, UK, United Kingdom
          1. Sailesh Kotecha (sailesh.kotecha{at}cardiffandvale.wales.nhs.uk)
          1. Child Health, Wales College of Medicine, Cardiff University, Cardiff CF14 4XN, Wales, UK, United Kingdom
            1. Iolo Doull (doullij{at}cf.ac.uk)
            1. Cystic Fibrosis/Respiratory Unit, United Kingdom

              Abstract

              Background: Historically croup was subdivided into classic "viral" croup with associated viral URTI, and recurrent or spasmodic croup where asthma and allergies were thought more important.

              Subjects and methods: All children admitted to the University Hospital of Wales with croup in 2003 were eligible. Baseline demographics including croup score were recorded and per-nasal swabs taken for virus detection by RT-PCR. Recurrent croup was defined as at least one other admission for croup in the preceding or following 3 years.

              Results: Sixty (29.4%) children entered the study, and a viral pathogen was detected in 41(68%). There was no significant difference in the rate of virus detection between those with single episode croup and recurrent croup.

              Conclusions: The aetiology of "viral" and recurrent croup appears similar.

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