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Author Carlsson, C.J.; Vissing, N.H.; Sevelsted, A.; Johnston, S.L.; Bonnelykke, K.; Bisgaard, H. url  doi
  Title Duration of wheezy episodes in early childhood is independent of the microbial trigger Type Journal Article
  Year (down) 2015 Publication The Journal of Allergy and Clinical Immunology Abbreviated Journal J Allergy Clin Immunol  
  Volume 136 Issue 5 Pages 1208-14.e1-5  
  Keywords Respiratory tract infections; pediatrics; wheezy episodes  
  Abstract BACKGROUND: Wheezy episodes in young children are often triggered by viral and bacterial respiratory tract infections, but there is little evidence supporting the hypothesis that symptom duration depends on the specific microbial trigger. OBJECTIVE: We sought to investigate whether the duration of wheezy episodes in young children depends on the microbial trigger. METHODS: Two hundred eighty-three children from the Copenhagen Prospective Study on Asthma in Childhood2000 at-risk birth cohort were prospectively examined for common airway pathogenic bacteria and viruses during acute wheezy episodes in the first 3 years of life. Findings were related to symptomatic duration of episodes, as monitored in daily diary cards from birth. RESULTS: Eight hundred thirty-seven samples were investigated for viruses, bacteria, or both. Both viruses and bacteria were identified in 55% of episodes, bacteria were identified exclusively in 31% of episodes, and viruses were identified exclusively in 10% of episodes. The median duration of acute symptoms was 9 days (interquartile range, 5-16 days), and duration was independent of bacterial or viral species. CONCLUSIONS: The duration of wheezy episodes was independent of pathogenic airway bacterial or viral species. This suggests that symptom burden from infections is dependent on other factors, such as environmental exposures or host factors. The common term viral wheeze seems inappropriate in view of the finding of pathogenic bacteria in 86% of wheezy episodes.  
  Address COPSAC, Copenhagen Prospective Studies on Asthma in Childhood, Herlev and Gentofte Hospital, University of Copenhagen, Copenhagen, Denmark. Electronic address:  
  Corporate Author Thesis  
  Impact Factor 11,476 First Author Carlsson, C.J. Editor  
  Language English Summary Language Original Title  
  Series Editor Series Title Abbreviated Series Title  
  Series Volume Series Issue Senior Author Bisgaard, H.  
  ISSN 0091-6749 ISBN Medium  
  Area Expedition Conference  
  Notes PMID:26100088 Approved no  
  Call Number Serial 33  
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