Evidence map›Paper›PMID 22814442›Full record

ArticleEpidemiology and infection2013

Excess mortality associated with the 2009 A(H1N1)v influenza pandemic in Antananarivo, Madagascar.

S Rajatonirina, B Rakotosolofo, F Rakotomanana, L Randrianasolo, M Ratsitoharina, H Raharinandrasana, J-M Heraud, V Richard

Open access · bronzeAbstract read
In one paragraph

Article in Epidemiology and infection, 2013. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 11 papers.

0numbers the graph read from it
0cells of the map it votes in
11citing papers in PubMed
1.2field-weighted citation impact, top 20% 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

11 citing papers in PubMed, 13 citations in OpenAlex.

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4 · The record

Corrections and comments

5 · Who and what money

Authors and funding

8 authors at 2 institutions in 1 country.

S RajatonirinaEpidemiological Unit, Institut Pasteur de Madagascar, Antananarivo, Madagascar.
B Rakotosolofo
F Rakotomanana
L Randrianasolo
M Ratsitoharina
H Raharinandrasana
J-M Heraud
V Richard
Institut Pasteur de Madagascar · MGUniversity of Antananarivo · MG

Funding

PREPAREDNESS AND RESPONSE TO AVIAN AND PANDEMIC INFLUENZA IN MADAGASCARU51IP000327 · IP · PASTEUR INSTITUTE FROM MADAGASCAR · PI HERAUD, JEAN-MICHEL · 2009 to 2012
$1.6M
NCIRD CDC HHS U51 IP000327NCIRD CDC HHS U51IP000327-01
6 · The paper itself

Abstract

It is difficult to assess the mortality burden of influenza epidemics in tropical countries. Until recently, the burden of influenza was believed to be negligible in Africa. We assessed the impact of the 2009 influenza epidemic on mortality in Madagascar by conducting Poisson regression analysis on mortality data from the deaths registry, after the first wave of the 2009 A(H1N1) virus pandemic. There were 20% more human deaths than expected in Antananarivo, Madagascar in November 2009, with excess mortality in the ⩾50 years age group (relative risk 1·41). Furthermore, the number of deaths from pulmonary disease was significantly higher than the number of deaths from other causes during this pandemic period. These results suggest that the A(H1N1) 2009 virus pandemic may have been accompanied by an increase in mortality.

Indexed as

Influenza A Virus, H1N1 SubtypePandemicsAdolescentAdultAgedAge FactorsChildHumansInfluenza, HumanLung DiseasesMadagascarMiddle AgedRegression AnalysisRisk

Identifiers

PMID22814442
PMCPMC9151851
OpenAlexW2329050763

What OpenQuestion holds

Textmetadata
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.