Evidence map›Paper›PMID 27706149›Full record

ArticlePloS one2016

Influenza Pandemics and Tuberculosis Mortality in 1889 and 1918: Analysis of Historical Data from Switzerland.

Kathrin Zürcher, Marcel Zwahlen, Marie Ballif, Hans L Rieder, Matthias Egger, Lukas Fenner

Open access · goldAbstract readHistorical Article
In one paragraph

Article in PloS one, 2016. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 24 papers, 2 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
24citing papers in PubMed, 2 pooled it
2.6field-weighted citation impact, top 10% of its field
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

24 citing papers in PubMed, 2 syntheses or guidelines pooled it, 47 citations in OpenAlex.

  1. Influenza and tuberculosis co-infection: A systematic review.Influenza and other respiratory viruses · 2020
    Pooled it
  2. Pooled it
  3. Review
  4. Article
  5. Article
  6. Article
  7. Article
  8. Article
  9. Article
  10. The COVID-19 and TB syndemic: the way forward.The international journal of tuberculosis and lung disease : the official journal of the International Union against Tuberculosis and Lung Disease · 2022
    Review
  11. Observational
  12. Review
  13. Article
  14. Article
  15. Article
  16. Tuberculosis as a Risk Factor for 1918 Influenza Pandemic Outcomes.Tropical medicine and infectious disease · 2019
    Article
  17. Article
  18. Prevalence and clinical significance of respiratory viruses and bacteria detected in tuberculosis patients compared to household contact controls in Tanzania: a cohort study.Clinical microbiology and infection : the official publication of the European Society of Clinical Microbiology and Infectious Diseases · 2019
    Article
  19. Review
  20. Article
4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

6 authors at 2 institutions in 1 country.

Kathrin ZürcherInstitute of Social and Preventive Medicine, University of Bern, Bern, Switzerland.
Marcel ZwahlenInstitute of Social and Preventive Medicine, University of Bern, Bern, Switzerland.
Marie BallifInstitute of Social and Preventive Medicine, University of Bern, Bern, Switzerland.
Hans L RiederEpidemiology, Biostatistics and Prevention Institute, University of Zürich, Zürich, Switzerland.
Matthias EggerInstitute of Social and Preventive Medicine, University of Bern, Bern, Switzerland.
Lukas FennerInstitute of Social and Preventive Medicine, University of Bern, Bern, Switzerland.ORCID http://orcid.org/0000-0003-3309-4835
University of Bern · CHUniversity of Zurich · CH

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundTuberculosis (TB) mortality declined in the northern hemisphere over the last 200 years, but peaked during the Russian (1889) and the Spanish (1918) influenza pandemics. We studied the impact of these two pandemics on TB mortality.

methodsWe retrieved historic data from mortality registers for the city of Bern and countrywide for Switzerland. We used Poisson regression models to quantify the excess pulmonary TB (PTB) mortality attributable to influenza.

resultsYearly PTB mortality rates increased during both influenza pandemics. Monthly influenza and PTB mortality rates peaked during winter and early spring. In Bern, for an increase of 100 influenza deaths (per 100,000 population) monthly PTB mortality rates increased by a factor of 1.5 (95%Cl 1.4-1.6, p<0.001) during the Russian, and 3.6 (95%Cl 0.7-18.0, p = 0.13) during the Spanish pandemic. Nationally, the factor was 2.0 (95%Cl 1.8-2.2, p<0.001) and 1.5 (95%Cl 1.1-1.9, p = 0.004), respectively. We did not observe any excess cancer or extrapulmonary TB mortality (as a negative control) during the influenza pandemics.

conclusionsWe demonstrate excess PTB mortality during historic influenza pandemics in Switzerland, which supports a role for influenza vaccination in PTB patients in high TB incidence countries.

Indexed as

Databases, FactualHistory, 19th CenturyHistory, 20th CenturyHumansInfluenza, HumanPandemicsPoisson DistributionRussiaSeasonsSpainSurvival AnalysisSwitzerlandTuberculosis

Identifiers

PMID27706149
PMCPMC5051959
OpenAlexW2551499412

What OpenQuestion holds

Textmetadata
LicenceCC BY
Read underepoch 390

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.