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The Etiological Role of Common Respiratory Viruses in Acute Respiratory Infections in Older Adults: A Systematic Review and Meta-analysis.

Authors
  • Shi, Ting1
  • Arnott, Andrew1
  • Semogas, Indre1
  • Falsey, Ann R2, 3
  • Openshaw, Peter4
  • Wedzicha, Jadwiga A4
  • Campbell, Harry1
  • Nair, Harish1, 3
  • 1 Centre for Global Health Research, Usher Institute of Population Health Sciences and Informatics, University of Edinburgh.
  • 2 University of Rochester School of Medicine, New York.
  • 3 ReSViNET Foundation, Zeist, The Netherlands. , (Netherlands)
  • 4 National Heart and Lung Institute, Imperial College London, United Kingdom. , (United Kingdom)
Type
Published Article
Journal
The Journal of Infectious Diseases
Publisher
Oxford University Press
Publication Date
Oct 07, 2020
Volume
222
Issue
Supplement_7
Identifiers
DOI: 10.1093/infdis/jiy662
PMID: 30849176
Source
Medline
Keywords
Language
English
License
Unknown

Abstract

Acute respiratory tract infections (ARI) constitute a substantial disease burden in adults and elderly individuals. We aimed to identify all case-control studies investigating the potential role of respiratory viruses in the etiology of ARI in older adults aged ≥65 years. We conducted a systematic literature review (across 7 databases) of case-control studies published from 1996 to 2017 that investigated the viral profile of older adults with and those without ARI. We then computed a pooled odds ratio (OR) with a 95% confidence interval and virus-specific attributable fraction among the exposed (AFE) for 8 common viruses: respiratory syncytial virus (RSV), influenza virus (Flu), parainfluenza virus (PIV), human metapneumovirus (HMPV), adenovirus (AdV), rhinovirus (RV), bocavirus (BoV), and coronavirus (CoV). From the 16 studies included, there was strong evidence of possible causal attribution for RSV (OR, 8.5 [95% CI, 3.9-18.5]; AFE, 88%), Flu (OR, 8.3 [95% CI, 4.4-15.9]; AFE, 88%), PIV (OR, not available; AFE, approximately 100%), HMPV (OR, 9.8 [95% CI, 2.3-41.0]; AFE, 90%), AdV (OR, not available; AFE, approximately 100%), RV (OR, 7.1 [95% CI, 3.7-13.6]; AFE, 86%) and CoV (OR, 2.8 [95% CI, 2.0-4.1]; AFE, 65%) in older adults presenting with ARI, compared with those without respiratory symptoms (ie, asymptomatic individuals) or healthy older adults. However, there was no significant difference in the detection of BoV in cases and controls. This review supports RSV, Flu, PIV, HMPV, AdV, RV, and CoV as important causes of ARI in older adults and provides quantitative estimates of the absolute proportion of virus-associated ARI cases to which a viral cause can be attributed. Disease burden estimates should take into account the appropriate AFE estimates (for older adults) that we report. © The Author(s) 2019. Published by Oxford University Press for the Infectious Diseases Society of America. All rights reserved. For permissions, e-mail: [email protected]

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