Evidence map›Paper›PMID 30422307›Full record

ArticleClinical and experimental immunology2019

The impact of timing of maternal influenza immunization on infant antibody levels at birth.

Z Zhong, M Haltalli, B Holder, T Rice, B Donaldson, M O'Driscoll, K Le-Doare, B Kampmann, J S Tregoning

Abstract read
In one paragraph

Article in Clinical and experimental immunology, 2019. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 23 papers.

0numbers the graph read from it
0cells of the map it votes in
23citing 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.

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

23 citing papers in PubMed.

  1. Trial
  2. Trial
  3. Maternal Influenza Vaccine Reduces the Risk of Respiratory Syncytial Virus and Related Respiratory Hospitalizations in Early Infancy: An Epidemiological Study.Clinical infectious diseases : an official publication of the Infectious Diseases Society of America · 2026
    Article
  4. Missed opportunities for maternal immunisation against influenza and COVID-19, Norway, October 2023 to May 2024: a population-based registry study.Euro surveillance : bulletin Europeen sur les maladies transmissibles = European communicable disease bulletin · 2026
    Article
  5. Article
  6. Article
  7. Review
  8. Article
  9. Article
  10. Article
  11. Article
  12. Vaccination in preterm and low birth weight infants in India.Human vaccines & immunotherapeutics · 2022
    Review
  13. Article
  14. Article
  15. Article
  16. Review
  17. Influenza in Children.Cold Spring Harbor perspectives in medicine · 2021
    Review
  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

9 authors.

Z ZhongMucosal Infection and Immunity Group, Section of Virology, Department of Medicine, St Mary's Campus, Imperial College London, UK.
M HaltalliMucosal Infection and Immunity Group, Section of Virology, Department of Medicine, St Mary's Campus, Imperial College London, UK.
B HolderCentre for International Child Health, Section of Paediatrics, Department of Medicine, St Mary's Campus, Imperial College London, UK.
T RiceCentre for International Child Health, Section of Paediatrics, Department of Medicine, St Mary's Campus, Imperial College London, UK.
B DonaldsonCentre for International Child Health, Section of Paediatrics, Department of Medicine, St Mary's Campus, Imperial College London, UK.
M O'DriscollCentre for International Child Health, Section of Paediatrics, Department of Medicine, St Mary's Campus, Imperial College London, UK.
K Le-DoareInfection and Immunity Theme, St George's University of London, Tooting, UK.
B KampmannCentre for International Child Health, Section of Paediatrics, Department of Medicine, St Mary's Campus, Imperial College London, UK.
J S TregoningMucosal Infection and Immunity Group, Section of Virology, Department of Medicine, St Mary's Campus, Imperial College London, UK.ORCID 0000-0001-8093-8741

Funding

Department of HealthMedical Research Council MC_UP_A900_1122Medical Research Council MC_UU_00026/2
6 · The paper itself

Abstract

Pregnant women and infants are at an increased risk of severe disease after influenza infection. Maternal immunization is a potent tool to protect both these at-risk groups. While the primary aim of maternal influenza vaccination is to protect the mother, a secondary benefit is the transfer of protective antibodies to the infant. A recent study using the tetanus, diphtheria and acellular pertussis (Tdap) vaccine indicated that children born to mothers immunized in the second trimester of pregnancy had the highest antibody titres compared to children immunized in the third trimester. The aim of the current study was to investigate how the timing of maternal influenza immunization impacts infant antibody levels at birth. Antibody titres were assessed in maternal and cord blood samples by both immunoglobulin (Ig)G-binding enzyme-linked immunosorbent assay (ELISA) and haemagglutination inhibition assay (HAI). Antibody titres to the H1N1 component were significantly higher in infants born to mothers vaccinated in either the second or third trimesters than infants born to unvaccinated mothers. HAI levels in the infant were significantly lower when maternal immunization was performed less than 4 weeks before birth. These studies confirm that immunization during pregnancy increases the antibody titre in infants. Importantly, antibody levels in cord blood were significantly higher when the mother was vaccinated in either trimesters 2 or 3, although titres were significantly lower if the mother was immunized less than 4 weeks before birth. Based on these data, seasonal influenza vaccination should continue to be given in pregnancy as soon as it becomes available.

Indexed as

AdultAntibodies, ViralFemaleHumansImmunity, Maternally-AcquiredImmunoglobulin GInfantInfant, NewbornInfluenza A Virus, H1N1 SubtypeInfluenza, HumanInfluenza VaccinesMaternal-Fetal ExchangePregnancyPregnancy Trimester, SecondPregnancy Trimester, ThirdVaccinationAntibodies, ViralImmunoglobulin GInfluenza Vaccineshumanvaccinationviral

Identifiers

PMID30422307
PMCPMC6330660

What OpenQuestion holds

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Registered trials

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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.