Evidence map›Paper›PMID 26863307›Full record

ArticlePloS one2016

Long-Term Protection against Diphtheria in the Netherlands after 50 Years of Vaccination: Results from a Seroepidemiological Study.

E M Swart, P G M van Gageldonk, H E de Melker, F R van der Klis, G A M Berbers, L Mollema

Open access · goldAbstract read
In one paragraph

Article in PloS one, 2016. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 21 papers, 2 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
21citing papers in PubMed, 2 pooled it
5.0field-weighted citation impact, top 5% 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

21 citing papers in PubMed, 2 syntheses or guidelines pooled it, 45 citations in OpenAlex.

  1. Pooled it
  2. Pooled it
  3. Article
  4. Review
  5. Article
  6. Article
  7. Article
  8. Article
  9. Genetic characterization of diphtheriaIranian journal of microbiology · 2022
    Article
  10. Diphtheria in the WHO European Region, 2010 to 2019.Euro surveillance : bulletin Europeen sur les maladies transmissibles = European communicable disease bulletin · 2022
    Article
  11. Validation of a diphtheria toxoid multiplex bead assay for serosurveys.Diagnostic microbiology and infectious disease · 2021
    Article
  12. Article
  13. Article
  14. Article
  15. Article
  16. Article
  17. Transmission of toxigenicEuro surveillance : bulletin Europeen sur les maladies transmissibles = European communicable disease bulletin · 2018
    Article
  18. Article
  19. Large measles epidemic in the Netherlands, May 2013 to March 2014: changing epidemiology.Euro surveillance : bulletin Europeen sur les maladies transmissibles = European communicable disease bulletin · 2017
    Article
  20. Tetanus-diphtheria-acellular pertussis vaccination for adults: an update.Clinical and experimental vaccine research · 2017
    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

6 authors at 1 institution in 1 country.

E M SwartCentre for Infectious Disease Control, National Institute for Public Health and the Environment, Bilthoven, the Netherlands.
P G M van GageldonkCentre for Infectious Disease Control, National Institute for Public Health and the Environment, Bilthoven, the Netherlands.
H E de MelkerCentre for Infectious Disease Control, National Institute for Public Health and the Environment, Bilthoven, the Netherlands.
F R van der KlisCentre for Infectious Disease Control, National Institute for Public Health and the Environment, Bilthoven, the Netherlands.
G A M BerbersCentre for Infectious Disease Control, National Institute for Public Health and the Environment, Bilthoven, the Netherlands.
L MollemaCentre for Infectious Disease Control, National Institute for Public Health and the Environment, Bilthoven, the Netherlands.
National Institute for Public Health and the Environment · NL

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

BACKGROUND AND

aimsTo evaluate the National Immunisation Programme (NIP) a population-based cross-sectional seroepidemiological study was performed in the Netherlands. We assessed diphtheria antitoxin levels in the general Dutch population and in low vaccination coverage (LVC) areas where a relatively high proportion of orthodox Protestants live who decline vaccination based on religious grounds. Results were compared with a nationwide seroepidemiological study performed 11 years earlier.

methodsIn 2006/2007 a national serum bank was established. Blood samples were tested for diphtheria antitoxin IgG concentrations using a multiplex immunoassay for 6383 participants from the national sample (NS) and 1518 participants from LVC municipalities. A cut-off above 0.01 international units per ml (IU/ml) was used as minimum protective level.

resultsIn the NS 91% of the population had antibody levels above 0.01 IU/ml compared to 88% in the 1995/1996 serosurvey (p<0.05). On average, 82% (vs. 78% in the 1995/1996 serosurvey, p<0.05) of individuals from the NS born before introduction of diphtheria vaccination in the NIP and 46% (vs. 37% in the 1995/1996 serosurvey, p = 0.11) of orthodox Protestants living in LVC areas had antibody levels above 0.01 IU/ml. Linear regression analysis among fully immunized individuals (six vaccinations) without evidence of revaccination indicated a continuous decline in antibodies in both serosurveys, but geometric mean antibodies remained well above 0.01 IU/ml in all age groups.

conclusionsThe NIP provides long-term protection against diphtheria, although antibody levels decline after vaccination. As a result of natural waning immunity, a substantial proportion of individuals born before introduction of diphtheria vaccination in the NIP lack adequate levels of diphtheria antibodies. Susceptibility due to lack of vaccination is highest among strictly orthodox Protestants. The potential risk of spread of diphtheria within the geographically clustered orthodox Protestant community after introduction in the Netherlands has not disappeared, despite national long-term high vaccination coverage.

Indexed as

AdolescentAdultAgedChildChild, PreschoolCorynebacterium diphtheriaeCross-Sectional StudiesDiphtheriaDiphtheria AntitoxinDiphtheria ToxoidFemaleHumansImmunization ProgramsImmunoglobulin GInfantInfant, NewbornDiphtheria AntitoxinDiphtheria ToxoidImmunoglobulin G

Identifiers

PMID26863307
PMCPMC4749226
OpenAlexW2256243360

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.