Evidence map›Paper›PMID 22516189›Full record

ArticleEmerging infectious diseases2012

No association between 2008-09 influenza vaccine and influenza A(H1N1)pdm09 virus infection, Manitoba, Canada, 2009.

Salaheddin M Mahmud, Paul Van Caeseele, Gregory Hammond, Carol Kurbis, Tim Hilderman, Lawrence Elliott

Registry-linked trialOpen access · diamondAbstract read
In one paragraph

Article in Emerging infectious diseases, 2012. The graph could read no effect estimate from its abstract, so it casts no vote on the map. It is linked to trial NCT02367222 (An Observational Retrospective Database Analysis to Estimate the Risk of Multiple Sclerosis Following Vaccination With Arepanrix™ in Manitoba, Canada), which is not on this map. Cited by 15 papers, 4 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
15citing papers in PubMed, 4 pooled it
2.3field-weighted citation impact, top 12% 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.

NCT02367222 completednot on this mapstarted 2014, after this paper: background citation

An Observational Retrospective Database Analysis to Estimate the Risk of Multiple Sclerosis Following Vaccination With Arepanrix™ in Manitoba, Canada

TypeobservationalSponsorUniversity of ManitobaRan2014 to 2015Enrolled1ConditionsMultiple SclerosisArmsExposed to Arepanrix™ Cohort, Unexposed to Arepanrix™ Cohort
3 · Its place in the literature

Who cites it

15 citing papers in PubMed, 4 syntheses or guidelines pooled it, 19 citations in OpenAlex.

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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 3 institutions in 1 country.

Salaheddin M MahmudUniversity of Manitoba, Winnipeg, Manitoba, Canada. salah.mahmud@gmail.com
Paul Van Caeseele
Gregory Hammond
Carol Kurbis
Tim Hilderman
Lawrence Elliott
Winnipeg Regional Health Authority · CAUniversity of Manitoba · CAManitoba Health · CA

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

We conducted a population-based study in Manitoba, Canada, to investigate whether use of inactivated trivalent influenza vaccine (TIV) during the 2008-09 influenza season was associated with subsequent infection with influenza A(H1N1)pdm09 virus during the first wave of the 2009 pandemic. Data were obtained from a provincewide population-based immunization registry and laboratory-based influenza surveillance system. The test-negative case-control study included 831 case-patients with confirmed influenza A(H1N1)pdm09 virus infection and 2,479 controls, participants with test results negative for influenza A and B viruses. For the association of TIV receipt with influenza A(H1N1)pdm09 virus infection, the fully adjusted odds ratio was 1.0 (95% CI 0.7-1.4). Among case-patients, receipt of 2008-09 TIV was associated with a statistically nonsignificant 49% reduction in risk for hospitalization. In agreement with study findings outside Canada, our study in Manitoba indicates that the 2008-09 TIV neither increased nor decreased the risk for infection with influenza A(H1N1)pdm09 virus.

Indexed as

Influenza VaccinesPandemicsAdolescentAdultAgedCase-Control StudiesChildChild, PreschoolFemaleHumansInfantInfluenza A Virus, H1N1 SubtypeInfluenza, HumanMaleManitobaMiddle AgedInfluenza Vaccines

Identifiers

PMID22516189
PMCPMC3358049
OpenAlexW2110915832

What OpenQuestion holds

Textmetadata
LicenceCC BY
Read underepoch 390

Registered trials

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.