Evidence map›Paper›PMID 25224643›Full record

ArticleThe Journal of infection2015

Hemagglutination inhibiting antibodies and protection against seasonal and pandemic influenza infection.

Annette Fox, Le Quynh Mai, Le Thi Thanh, Marcel Wolbers, Nguyen Le Khanh Hang, Pham Quang Thai, Nguyen Thi Thu Yen, Le Nguyen Minh Hoa, Juliet E Bryant, Tran Nhu Duong and 6 more

Open access · hybridAbstract read
In one paragraph

Article in The Journal of infection, 2015. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 30 papers.

0numbers the graph read from it
0cells of the map it votes in
30citing papers in PubMed
3.2field-weighted citation impact, top 9% 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

30 citing papers in PubMed, 49 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

16 authors at 4 institutions in 2 countries.

Annette FoxOxford University Clinical Research Unit and Wellcome Trust Major Overseas Programme, Viet Nam; Center for Tropical Medicine, Nuffield Department of Clinical Medicine, University of Oxford, Oxford, UK; The University of Melbourne, Peter Doherty Institute for Infection and Immunity, Department of Microbiology and Immunology, Parkville, Victoria, Australia. Electronic address: afox@oucru.org.
Le Quynh MaiNational Institute of Hygiene and Epidemiology, Hanoi, Viet Nam.
Le Thi ThanhNational Institute of Hygiene and Epidemiology, Hanoi, Viet Nam.
Marcel WolbersOxford University Clinical Research Unit and Wellcome Trust Major Overseas Programme, Viet Nam; Center for Tropical Medicine, Nuffield Department of Clinical Medicine, University of Oxford, Oxford, UK.
Nguyen Le Khanh HangNational Institute of Hygiene and Epidemiology, Hanoi, Viet Nam.
Pham Quang ThaiNational Institute of Hygiene and Epidemiology, Hanoi, Viet Nam.
Nguyen Thi Thu YenNational Institute of Hygiene and Epidemiology, Hanoi, Viet Nam.
Le Nguyen Minh HoaOxford University Clinical Research Unit and Wellcome Trust Major Overseas Programme, Viet Nam.
Juliet E BryantOxford University Clinical Research Unit and Wellcome Trust Major Overseas Programme, Viet Nam; Center for Tropical Medicine, Nuffield Department of Clinical Medicine, University of Oxford, Oxford, UK.
Tran Nhu DuongNational Institute of Hygiene and Epidemiology, Hanoi, Viet Nam.
Dang Dinh ThoangHa Nam Centre for Preventive Medicine, Ha Nam, Viet Nam.
Ian G BarrWorld Health Organization Collaborating Centre for Reference and Research on Influenza, Victorian Infectious Diseases Reference Laboratory, North Melbourne, Australia.
Heiman WertheimOxford University Clinical Research Unit and Wellcome Trust Major Overseas Programme, Viet Nam; Center for Tropical Medicine, Nuffield Department of Clinical Medicine, University of Oxford, Oxford, UK.
Jeremy FarrarOxford University Clinical Research Unit and Wellcome Trust Major Overseas Programme, Viet Nam; Center for Tropical Medicine, Nuffield Department of Clinical Medicine, University of Oxford, Oxford, UK.
Nguyen Tran HienNational Institute of Hygiene and Epidemiology, Hanoi, Viet Nam.
Peter HorbyOxford University Clinical Research Unit and Wellcome Trust Major Overseas Programme, Viet Nam; Center for Tropical Medicine, Nuffield Department of Clinical Medicine, University of Oxford, Oxford, UK.
National Institute Of Hygiene And Epidemiology · VNOxford University Clinical Research Unit · VNThe University of Melbourne · AUVictorian Infectious Diseases Reference Laboratory · AU

Funding

Wellcome Trust 077078/Z/05/ZWellcome Trust 081613/Z/06/ZWellcome Trust 087982AIAWellcome Trust 089276
6 · The paper itself

Abstract

objectivesHemagglutination inhibiting (HI) antibodies correlate with influenza vaccine protection but their association with protection induced by natural infection has received less attention and was studied here.

methods940 people from 270 unvaccinated households participated in active ILI surveillance spanning 3 influenza seasons. At least 494 provided paired blood samples spanning each season. Influenza infection was confirmed by RT-PCR on nose/throat swabs or serum HI assay conversion.

resultsPre-season homologous HI titer was associated with a significantly reduced risk of infection for H3N2 (OR 0.61, 95%CI 0.44-0.84) and B (0.65, 95%CI 0.54-0.80) strains, but not H1N1 strains, whether re-circulated (OR 0.90, 95%CI 0.71-1.15), new seasonal (OR 0.86, 95%CI 0.54-1.36) or pandemic H1N1-2009 (OR 0.77, 95%CI 0.40-1.49). The risk of seasonal and pandemic H1N1 decreased with increasing age (both p < 0.0001), and the risk of pandemic H1N1 decreased with prior seasonal H1N1 (OR 0.23, 95%CI 0.08-0.62) without inducing measurable A/California/04/2009-like titers.

conclusionsWhile H1N1 immunity was apparent with increasing age and prior infection, the effect of pre-season HI titer was at best small, and weak for H1N1 compared to H3N2 and B. Antibodies targeting non-HI epitopes may have been more important mediators of infection-neutralizing immunity for H1N1 compared to other subtypes in this setting.

Indexed as

AdolescentAdultAgedAged, 80 and overAntibodies, NeutralizingAntibodies, ViralChildChild, PreschoolCohort StudiesFemaleHemagglutinationHemagglutination Inhibition TestsHumansInfantInfluenza, HumanMaleAntibodies, NeutralizingAntibodies, ViralAntibodyHemagglutination inhibition testsHumanHumansHumoralImmunityInfluenzaNeutralizingPandemics

Identifiers

PMID25224643
PMCPMC4309889
OpenAlexW1997515118

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.