Evidence map›Paper›PMID 21813667›Full record

ArticleClinical and vaccine immunology : CVI2011

Reduced antibody responses to the pandemic (H1N1) 2009 vaccine after recent seasonal influenza vaccination.

Yoon Seok Choi, Yun Hee Baek, Wonseok Kang, Seung Joo Nam, Jino Lee, Sooseong You, Dong-Yeop Chang, Jong-Chan Youn, Young Ki Choi, Eui-Cheol Shin

Registry-linked trialAbstract read
In one paragraph

Article in Clinical and vaccine immunology : CVI, 2011. The graph could read no effect estimate from its abstract, so it casts no vote on the map. It is linked to trial NCT07215871 (Rechallenge With a Low Pathogenicity Avian H10N7 Influenza Virus in Healthy Human Volunteers Previously Challenged With H10N7 Influenza), which is not on this map. Cited by 30 papers.

0numbers the graph read from it
0cells of the map it votes in
30citing papers in PubMed
–field-weighted citation impact
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.

NCT07215871 phase1enrolling by invitationnot on this mapstarted 2026, after this paper: background citation

Rechallenge With a Low Pathogenicity Avian H10N7 Influenza Virus in Healthy Human Volunteers Previously Challenged With H10N7 Influenza

TypeinterventionalSponsorNational Institute of Allergy and Infectious Diseases (NIAID)Ran2026 to 2027Enrolled33ConditionsInfluenza Infection, Infections, Respiratory Virus Infections, Respiratory Tract InfectionsArmsA/Mallard/Ohio-99/MM4/1989 H10N7
3 · Its place in the literature

Who cites it

30 citing papers in PubMed.

  1. Trial
  2. Trial
  3. Trial
  4. Trial
  5. Review
  6. Review
  7. Article
  8. Article
  9. Article
  10. Review
  11. Article
  12. Review
  13. Article
  14. Review
  15. Article
  16. Review
  17. Article
  18. 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

10 authors.

Yoon Seok ChoiLaboratory of Immunology and Infectious Diseases, Graduate School of Medical Science and Engineering, KAIST, 335 Gwahangno, Daejeon, Republic of Korea 305-701.
Yun Hee Baek
Wonseok Kang
Seung Joo Nam
Jino Lee
Sooseong You
Dong-Yeop Chang
Jong-Chan Youn
Young Ki Choi
Eui-Cheol Shin

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

The vaccination program against the 2009 pandemic H1N1 influenza virus (2009 H1N1) provided a unique opportunity to determine if immune responses to the 2009 H1N1 vaccine were affected by a recent, prior vaccination against seasonal influenza virus. In the present study, we studied the immune responses to the 2009 H1N1 vaccine in subjects who either received the seasonal influenza virus vaccination within the prior 3 months or did not. Following 2009 H1N1 vaccination, subjects previously given a seasonal influenza virus vaccination exhibited significantly lower antibody responses, as determined by hemagglutination inhibition assay, than subjects who had not received the seasonal influenza virus vaccination. This result is compatible with the phenomenon of "original antigenic sin," by which previous influenza virus vaccination hampers induction of immunity against a new variant. Our finding should be taken into account for future vaccination programs against pandemic influenza virus outbreaks.

Indexed as

PandemicsSeasonsAdolescentAntibodies, ViralAntibody FormationFemaleHumansInfluenza A Virus, H1N1 SubtypeInfluenza A Virus, H3N2 SubtypeInfluenza B virusInfluenza, HumanInfluenza VaccinesTreatment OutcomeVaccinationAntibodies, ViralInfluenza Vaccines

Identifiers

PMID21813667
PMCPMC3165229

What OpenQuestion holds

Textmetadata
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.