Respective role of non-pharmaceutical interventions on bronchiolitis outbreaks, an interrupted time series analysis based on a multinational surveillance system - Archive ouverte HAL Access content directly
Journal Articles European Respiratory Journal Year : 2022

Respective role of non-pharmaceutical interventions on bronchiolitis outbreaks, an interrupted time series analysis based on a multinational surveillance system

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Lea Lenglart
Caner Turan
  • Function : Author

Abstract

Background Bronchiolitis is a major source of morbimortality among young children worldwide. Non-pharmaceutical interventions (NPIs) implemented to reduce the spread of SARS-CoV-2 may have had an important impact on bronchiolitis outbreaks, as well as major societal consequences. Discriminating between their respective impacts would help define optimal public health strategies against bronchiolitis. We aimed to assess the respective impact of each NPI on bronchiolitis outbreaks in 14 European countries. Methods We conducted a quasi-experimental interrupted time-series analysis based on a multicentre international study. All children diagnosed with bronchiolitis presenting to the paediatric emergency department of one of the 27 centres from January 2018 to March 2021 were included. We assessed the association between each NPI and change in the bronchiolitis trend over time by seasonally adjusted multivariable quasi-Poisson regression modelling. Results In total, 42 916 children were included. We observed an overall cumulative 78% reduction (95%CI [−100;−54], p<0.0001) in bronchiolitis cases following NPI implementation. The decrease varied between countries from −97% (95%CI [−100;−47], p=0.0005) to −36% (95%CI [−79;+07], p=0.105). Full lockdown (IRR 0.21, 95%CI [0.14;0.30], p<0.001), secondary-school closure (IRR 0.33, 95%CI [0.20;0.52], p<0.0001), wearing a mask indoors (IRR 0.49, 95%CI [0.25;0.94], p=0.034), and teleworking (IRR 0.55, 95%CI [0.31;0.97], p=0.038) were independently associated with reducing bronchiolitis. Conclusion Several NPIs were associated with a reduction of bronchiolitis outbreaks, including full lockdown, school closure, teleworking and facial masking. Some of these public health interventions may be considered to further reduce the global burden of bronchiolitis.
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Dates and versions

inserm-03941039 , version 1 (16-01-2023)

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Lea Lenglart, Naim Ouldali, Kate Honeyford, Zsolt Bognar, Silvia Bressan, et al.. Respective role of non-pharmaceutical interventions on bronchiolitis outbreaks, an interrupted time series analysis based on a multinational surveillance system. European Respiratory Journal, 2022, pp.2201172. ⟨10.1183/13993003.01172-2022⟩. ⟨inserm-03941039⟩
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