Evidence map›Paper›PMID 25764094›Full record

ArticleThe Pediatric infectious disease journal2015

Seroprevalence of pertussis in the Gambia: evidence for continued circulation of bordetella pertussis despite high vaccination rates.

Susana Scott, Marianne van der Sande, Tisbeh Faye-Joof, Maimuna Mendy, Bakary Sanneh, Fatou Barry Jallow, Hester de Melker, Fiona van der Klis, Pieter van Gageldonk, Frits Mooi and 1 more

Open access · hybridAbstract read
In one paragraph

Article in The Pediatric infectious disease journal, 2015. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 22 papers.

0numbers the graph read from it
0cells of the map it votes in
22citing papers in PubMed
2.6field-weighted citation impact, top 12% 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

22 citing papers in PubMed, 48 citations in OpenAlex.

  1. Trial
  2. Seroepidemiological Assessment ofHealth care science · 2025
    Article
  3. Article
  4. Article
  5. Article
  6. Article
  7. Review
  8. Article
  9. Article
  10. Article
  11. Article
  12. Article
  13. The Role of Mucosal Immunity in Pertussis.Frontiers in immunology · 2018
    Review
  14. Article
  15. Immune persistence after pertussis vaccination.Human vaccines & immunotherapeutics · 2017
    Review
  16. Article
  17. Bordetella pertussis Infection in South African HIV-Infected and HIV-Uninfected Mother-Infant Dyads: A Longitudinal Cohort Study.Clinical infectious diseases : an official publication of the Infectious Diseases Society of America · 2016
    Article
  18. Influence of Population Demography and Immunization History on the Impact of an Antenatal Pertussis Program.Clinical infectious diseases : an official publication of the Infectious Diseases Society of America · 2016
    Article
  19. Morbidity and Mortality Due to Bordetella pertussis: A Significant Pathogen in West Africa?Clinical infectious diseases : an official publication of the Infectious Diseases Society of America · 2016
    Review
  20. Review
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

11 authors at 5 institutions in 4 countries.

Susana ScottFrom the *Medical Research Council (MRC) Unit, The Gambia, Fajara, The Gambia, West Africa; †Department of Infectious Disease Epidemiology, London School of Hygiene & Tropical Medicine, London, United Kingdom; ‡National Institute of Public Health and the Environment (RIVM), Centre for Infectious Diseases Control (CIb), Bilthoven, The Netherlands; §Julius Centre for Health Sciences and Primary Care, Utrecht University, Utrecht, The Netherlands; ¶International Agency for Research on Cancer, Lyon, France; and ‖Department of Paediatrics, Imperial College, London, United Kingdom.
Marianne van der Sande
Tisbeh Faye-Joof
Maimuna Mendy
Bakary Sanneh
Fatou Barry Jallow
Hester de Melker
Fiona van der Klis
Pieter van Gageldonk
Frits Mooi
Beate Kampmann
National Institute for Public Health and the Environment · NLMRC Unit the Gambia · GMUniversity of London · GBCentre International de Recherche sur le Cancer · FRImperial College London · GB

Funding

Medical Research Council MC_EX_MR/K011944/1Medical Research Council MC_UP_A900_1122World Health Organization 001
6 · The paper itself

Abstract

backgroundBordetella pertussis can cause severe respiratory disease and death in children. In recent years, large outbreaks have occurred in high-income countries; however, little is known about pertussis incidence in sub-Saharan Africa.

methodsWe evaluated antibody responses to pertussis toxin (Ptx) from individuals aged between 2 and 90 years in rural Gambia. IgG-Ptx was measured using luminex xMAP technology. IgG-Ptx geometric mean concentrations (GMC) and their 95% confidence intervals were calculated. The proportion seropositive (>20 EU/mL or ≥62.5 EU/mL) and GMCs were compared by age, sex, ethnic group, vaccination status, birth order and number of siblings per household using logistic and linear regression.

results76.3% had anti-Ptx levels <20 EU/mL, 17.5% had concentrations between 20 and 62.5 EU/mL, 4.4% had concentrations between 62.5 and 125 EU/mL and 1.8% had concentrations ≥125 EU/mL. The overall Ptx antibody GMC was 6.4 EU/mL (95% confidence interval: 5.8-6.9). Higher antibody concentrations were observed in older populations with evidence for an increase in infection risk with increasing age (1.9% yearly increase, 95% confidence interval: 1.3-2.5). No child under 6 years of age had GMC above 62.5 EU/mL but 29.5% had concentrations between 20 and 62.5 EU/mL.

conclusionsThese data provide evidence that B. pertussis is being transmitted within this population despite high vaccination coverage. Re-infection may occur implying that immunity from childhood vaccination may not be lifelong. In the absence of data on actual clinical cases of pertussis, seroprevalence studies remain valuable tools to assess the transmission dynamics of B. pertussis.

Indexed as

AdolescentAdultAgedAged, 80 and overAntibodies, BacterialAntitoxinsBordetella pertussisChildChild, PreschoolCohort StudiesFemaleGambiaHumansImmunoglobulin GIncidenceMaleAntibodies, BacterialAntitoxinsImmunoglobulin GPertussis Toxin

Identifiers

PMID25764094
PMCPMC4418845
OpenAlexW2015457026

What OpenQuestion holds

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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.