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The roles of transportation and transportation hubs in the propagation of influenza and coronaviruses: a systematic review

Browne, Annie; Ahmad, Sacha St-Onge; Beck, Charles R.; Nguyen-Van-Tam, Jonathan

Authors

Annie Browne

Sacha St-Onge Ahmad

Charles R. Beck



Abstract

BACKGROUND: Respiratory viruses spread in humans across wide geographical areas in short periods of time, resulting in high levels of morbidity and mortality. We undertook a systematic review to assess the evidence that air, ground and sea mass transportation systems or hubs are associated with propagating influenza and coronaviruses. METHODS: Healthcare databases and sources of grey literature were searched using pre-defined criteria between April and June 2014. Two reviewers screened all identified records against the protocol, undertook risk of bias assessments and extracted data using a piloted form. Results were analysed using a narrative synthesis. RESULTS: Forty-one studies met the eligibility criteria. Risk of bias was high in the observational studies, moderate to high in the reviews and moderate to low in the modelling studies. In-flight influenza transmission was identified substantively on five flights with up to four confirmed and six suspected secondary cases per affected flight. Five studies highlighted the role of air travel in accelerating influenza spread to new areas. Influenza outbreaks aboard cruise ships affect 2-7% of passengers. Influenza transmission events have been observed aboard ground transport vehicles. High heterogeneity between studies and the inability to exclude other sources of infection means that the risk of influenza transmission from an index case to other passengers cannot be accurately quantified. A paucity of evidence was identified describing severe acute respiratory syndrome coronavirus and Middle East respiratory syndrome coronavirus transmission events associated with transportation systems or hubs. CONCLUSION: Air transportation appears important in accelerating and amplifying influenza propagation. Transmission occurs aboard aeroplanes, at the destination and possibly at airports. Control measures to prevent influenza transmission on cruise ships are needed to reduce morbidity and mortality. There is no recent evidence of sea transport accelerating influenza or coronavirus spread to new areas. Further investigation is required regarding the roles of ground transportation systems and transport hubs in pandemic situations.

Citation

Browne, A., Ahmad, S. S., Beck, C. R., & Nguyen-Van-Tam, J. (in press). The roles of transportation and transportation hubs in the propagation of influenza and coronaviruses: a systematic review. Journal of Travel Medicine, 23(1), https://doi.org/10.1093/jtm/tav002

Journal Article Type Article
Acceptance Date Jan 18, 2016
Online Publication Date Jan 18, 2016
Deposit Date Oct 26, 2016
Publicly Available Date Mar 28, 2024
Journal Journal of Travel Medicine
Print ISSN 1195-1982
Electronic ISSN 1708-8305
Publisher Oxford University Press
Peer Reviewed Peer Reviewed
Volume 23
Issue 1
DOI https://doi.org/10.1093/jtm/tav002
Keywords Air Travel
Airports
Coronavirus Infections/*transmission
Humans
Influenza, Human/epidemiology/*transmission
Middle East Respiratory Syndrome Coronavirus
Risk Factors
SARS Virus
Severe Acute Respiratory Syndrome/*transmission
Ships
*Transportatio
Public URL https://nottingham-repository.worktribe.com/output/772367
Publisher URL http://jtm.oxfordjournals.org/content/23/1/tav002

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