Evidence map›Paper›PMID 31718740›Full record

ArticleEuro surveillance : bulletin Europeen sur les maladies transmissibles = European communicable disease bulletin2019

Impact of influenza vaccination programmes among the elderly population on primary care, Portugal, Spain and the Netherlands: 2015/16 to 2017/18 influenza seasons.

Ausenda Machado, Clara Mazagatos, Frederika Dijkstra, Irina Kislaya, Alin Gherasim, Scott A McDonald, Esther Kissling, Marta Valenciano, Adam Meijer, Mariëtte Hooiveld and 2 more

Open access · diamondAbstract read
In one paragraph

Article in Euro surveillance : bulletin Europeen sur les maladies transmissibles = European communicable disease bulletin, 2019. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 16 papers.

0numbers the graph read from it
0cells of the map it votes in
16citing papers in PubMed
1.4field-weighted citation impact, top 18% 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

16 citing papers in PubMed, 28 citations in OpenAlex.

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  9. COVID-19 mortality in two waves of the pandemic in Cali, Colombia, before and during vaccination roll-out.Revista panamericana de salud publica = Pan American journal of public health · 2023
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  13. Estimating averted COVID-19 cases, hospitalisations, intensive care unit admissions and deaths by COVID-19 vaccination, Italy, January-September 2021.Euro surveillance : bulletin Europeen sur les maladies transmissibles = European communicable disease bulletin · 2021
    Article
  14. Estimated number of deaths directly averted in people 60 years and older as a result of COVID-19 vaccination in the WHO European Region, December 2020 to November 2021.Euro surveillance : bulletin Europeen sur les maladies transmissibles = European communicable disease bulletin · 2021
    Article
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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

12 authors at 6 institutions in 3 countries.

Ausenda MachadoNational Institute for Health Doutor Ricardo Jorge, Epidemiology department, Lisbon, Portugal.
Clara MazagatosThese authors contributed equally.
Frederika DijkstraThese authors contributed equally.
Irina KislayaNational Institute for Health Doutor Ricardo Jorge, Epidemiology department, Lisbon, Portugal.
Alin GherasimNational Centre of Epidemiology, Carlos III Health Institute, CIBER of Epidemiology and Public Health (CIBERESP), Madrid, Spain.
Scott A McDonaldNational Institute for Public Health and the Environment (RIVM), Bilthoven, the Netherlands.
Esther KisslingEpidemiology department, Epiconcept, Paris, France.
Marta ValencianoEpidemiology department, Epiconcept, Paris, France.
Adam MeijerNational Institute for Public Health and the Environment (RIVM), Bilthoven, the Netherlands.
Mariëtte HooiveldNivel, Netherlands Institute for Health Services Research, Utrecht, the Netherlands.
Baltazar NunesNational Institute for Health Doutor Ricardo Jorge, Epidemiology department, Lisbon, Portugal.
Amparo LarrauriNational Centre of Epidemiology, Carlos III Health Institute, CIBER of Epidemiology and Public Health (CIBERESP), Madrid, Spain.
National Institute for Public Health and the Environment · NLInstituto de Salud Carlos III · ESUniversidade Nova de Lisboa · PTCentro de Investigación Biomédica en Red de Epidemiología y Salud Pública · ESNational Institute of Health Dr. Ricardo Jorge · PTNetherlands Institute for Health Services Research · NL

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

BackgroundTo increase the acceptability of influenza vaccine, it is important to quantify the overall benefits of the vaccination programme.AimTo assess the impact of influenza vaccination in Portugal, Spain and the Netherlands, we estimated the number of medically attended influenza-confirmed cases (MAICC) in primary care averted in the seasons 2015/16 to 2017/18 among those ≥ 65 years.MethodsWe used an ecological approach to estimate vaccination impact. We compared the number of observed MAICC (n) to the estimated number that would have occurred without the vaccination programme (N). To estimate N, we used: (i) MAICC estimated from influenza surveillance systems, (ii) vaccine coverage, (iii) pooled (sub)type-specific influenza vaccine effectiveness estimates for seasons 2015/16 to 2017/18, weighted by the proportion of virus circulation in each season and country. We estimated the number of MAICC averted (NAE) and the prevented fraction (PF) by the vaccination programme.ResultsThe annual average of NAE in the population ≥ 65 years was 33, 58 and 204 MAICC per 100,000 in Portugal, Spain and the Netherlands, respectively. On average, influenza vaccination prevented 10.7%, 10.9% and 14.2% of potential influenza MAICC each season in these countries. The lowest PF was in 2016/17 (4.9-6.1%) with an NAE ranging from 24 to 69 per 100,000.ConclusionsOur results suggest that influenza vaccination programmes reduced a substantial number of MAICC. Together with studies on hospitalisations and deaths averted by influenza vaccination programmes, this will contribute to the evaluation of the impact of vaccination strategies and strengthen public health communication.

Indexed as

AgedAged, 80 and overFemaleHumansImmunization ProgramsInfluenza, HumanInfluenza VaccinesMaleMiddle AgedNetherlandsPopulation SurveillancePortugalPrimary Health CarePublic HealthSeasonsSpainInfluenza Vaccinesaverted casesimpactinfluenzainfluenza vaccine

Identifiers

PMID31718740
PMCPMC6852314
OpenAlexW2988467123

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.