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Rhinovirus bronchiolitis increased risk of recurrent wheezing and asthma

Presented by
Dr Heidi Makrinioti, Imperial College London, UK
Conference
ERS 2021
Respiratory syncytial virus (RSV)-induced bronchiolitis is a known risk factor for recurrent wheeze and asthma development. The presented systematic review and meta-analysis showed that infants with rhinovirus (RV)-induced bronchiolitis had an even higher risk for school age asthma compared with RSV.

Previous literature shows that 1 in 3 infants develop recurrent wheeze or asthma after bronchiolitis [1]. Respiratory viruses are the primary cause of bronchiolitis in infants. While there appears to be a causal relationship between RSV or RV infection and asthma development, research has only compared outcomes of RSV and RV bronchiolitis. This is the first systematic review to directly compare the associations of RSV and RV bronchiolitis with preschool wheeze and asthma development.

To this end, 4 databases were searched for articles using a MeSH term-based algorithm. After screening, 48 studies were included in the meta-analysis which was limited to cohort studies and randomised controlled trials. Outcomes of interest were recurrent wheeze and diagnosis of asthma.

Results showed that children with RV bronchiolitis were more likely to develop asthma than children with RSV (OR 2.49; 95% CI 1.41–4.40). In addition, the RV bronchiolitis group was more likely to develop recurrent wheeze than the (OR 4.55; 95% CI 2.01–10.29).

According to Dr Heidi Makrinioti (Imperial College London, UK), in this first meta-analysis comparing RSV- and RV-induced bronchiolitis as a risk factor for recurrent wheeze and asthma, recurrent wheeze and asthma were more likely to occur after RV bronchiolitis than after RSV bronchiolitis. Thus, future studies should focus on infants with RV bronchiolitis as a risk group.

  1. Makrinioti, H. et al. The role of respiratory syncytial virus and rhinovirus in early recurrent wheeze and asthma inception – a systematic review. Abstract ERS 2021, 5–8 September.

 

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