Evidence map›Paper›PMID 27191967›Full record

SynthesisEmerging infectious diseases2016

Heterogeneous and Dynamic Prevalence of Asymptomatic Influenza Virus Infections.

Luis Furuya-Kanamori, Mitchell Cox, Gabriel J Milinovich, Ricardo J Soares Magalhaes, Ian M Mackay, Laith Yakob

Abstract readMeta-AnalysisSystematic Review
In one paragraph

Synthesis in Emerging infectious diseases, 2016. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 61 papers, 4 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
61citing papers in PubMed, 4 pooled it
–field-weighted citation impact
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

61 citing papers in PubMed, 4 syntheses or guidelines pooled it.

  1. Asymptomatic SARS-CoV-2 infection: A systematic review and meta-analysis.Proceedings of the National Academy of Sciences of the United States of America · 2021
    Pooled it
  2. Pooled it
  3. Prevalence of asymptomatic Zika virus infection: a systematic review.Bulletin of the World Health Organization · 2018
    Pooled it
  4. Pooled it
  5. Accuracy of comprehensive PCR analysis of nasopharyngeal and oropharyngeal swabs for CT-scan-confirmed pneumonia in elderly patients: a prospective cohort study.Clinical microbiology and infection : the official publication of the European Society of Clinical Microbiology and Infectious Diseases · 2019
    Trial
  6. Article
  7. Article
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  10. Dermcidin has antiviral activity and protects against influenza.Proceedings of the National Academy of Sciences of the United States of America · 2026
    Article
  11. Article
  12. Review
  13. Article
  14. Article
  15. Article
  16. Article
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1 more citing papers are in PubMed but not listed here.

4 · The record

Corrections and comments

5 · Who and what money

Authors and funding

6 authors.

Luis Furuya-Kanamori
Mitchell Cox
Gabriel J Milinovich
Ricardo J Soares Magalhaes
Ian M Mackay
Laith Yakob

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Influenza infection manifests in a wide spectrum of severity, including symptomless pathogen carriers. We conducted a systematic review and meta-analysis of 55 studies to elucidate the proportional representation of these asymptomatic infected persons. We observed extensive heterogeneity among these studies. The prevalence of asymptomatic carriage (total absence of symptoms) ranged from 5.2% to 35.5% and subclinical cases (illness that did not meet the criteria for acute respiratory or influenza-like illness) from 25.4% to 61.8%. Statistical analysis showed that the heterogeneity could not be explained by the type of influenza, the laboratory tests used to detect the virus, the year of the study, or the location of the study. Projections of infection spread and strategies for disease control require that we identify the proportional representation of these insidious spreaders early on in the emergence of new influenza subtypes or strains and track how this rate evolves over time and space.

Indexed as

Asymptomatic InfectionsHumansInfluenza A virusInfluenza, HumanPopulation SurveillancePrevalencePublication Biasasymptomaticfluinfluenzameta-analysispandemicprevalencesubclinicalsymptomless proportion

Identifiers

PMID27191967
PMCPMC4880086

What OpenQuestion holds

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Registered trials

None linked

Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.