Cited by 57Malaria Research and ControlMathematical and Theoretical Epidemiology and Ecology ModelsReproductive System and Pregnancy

A model of parity-dependent immunity to placental malaria

Open access
Walker, Patrick G. T., Griffin, Jamie T., Cairns, Matt, Rogerson, Stephen J., van Eijk, Anna M., ter Kuile, Feiko, Ghani, Azra C.·2013·Nature Communications

Abstract

Plasmodium falciparum placental infection during pregnancy is harmful for both mother and child. Protection from placental infection is parity-dependent, that is, acquired over consecutive pregnancies. However, the infection status of the placenta can only be assessed at delivery. Here, to better understand the mechanism underlying this parity-dependence, we fitted a model linking malaria dynamics within the general population to observed placental histology. Our results suggest that immunity resulting in less prolonged infection is a greater determinant of the parity-specific patterns than immunity that prevents placental sequestration. Our results also suggest the time when maternal blood first flows into the placenta is a high-risk period. Therefore, preventative strategies implementable before or early in pregnancy, such as insecticide-treated net usage in women of child-bearing age or any future vaccine, could substantially reduce the number of women who experience placental infection. Exposure to malaria during pregnancy can result in its spread to the placenta; however, the risk of placental infection decreases with subsequent pregnancies. By constructing a mathematical model, the authors find that this is likely due to a reduction in the duration of infection rather than a reduced risk of transfer.

The claims and statistics of this paper haven’t been checked yet.

Run the check — free, no account needed. It reads the open-access text and checks the sources it cites.

A few free checks a day · papers already verified open instantly · results are public

Integrity signals

Registry

Crossref · 10.1038/ncomms2605

Cites

45 of 45 references verified0 citation errors · 0 not checkable

Statistics

Claims the paper makes

The claims and statistics of this paper haven’t been checked yet.

Run the check — free, no account needed. It reads the open-access text and checks the sources it cites.

A few free checks a day · papers already verified open instantly · results are public

Claims other papers make about this one

Each is checked against this paper’s own text: does it say what the citing paper says it does?

Self-check

Percentages, sums and reported differences re-computed from the paper’s own numbers.

The self-check needs the paper’s full text.

Cites

Flagged first, then by citations

Cited by

Sorted by citations

Authors
Walker, P. G. T., Griffin, J. T., Cairns, M., Rogerson, S. J., van Eijk, A. M., ter Kuile, F., & Ghani, A. C.
Affiliations
  • Imperial College London (GB)
  • The Royal Melbourne Hospital (AU)
Corresponding author
Walker, Patrick G. T.
Venue
Nature Communications
Published
2013-03-19
Volume
4
Issue
1
Pages
1609-1609
ISSN
2041-1723 (ISSN-L)
OpenAlex
W2008016258
Cited by
57
References
45
Citations by year
2026: 3 · 2025: 3 · 2024: 2 · 2023: 1 · 2022: 11 · 2020: 6 · 2019: 2 · 2018: 11 · 2017: 7 · 2016: 2 · 2015: 6 · 2014: 3
FWCI
3.74
Type
journal article
Language
en
Open access
Locations
  • Nature Communications (publishedVersion, cc-by-nc-sa)
  • Europe PMC (PubMed Central) (publishedVersion, cc-by-nc-sa)
  • PubMed Central (publishedVersion, cc-by-nc-sa)
  • PubMed (publishedVersion)
  • LSHTM Research Online (London School of Hygiene and Tropical Medicine) (acceptedVersion)
  • Minerva Access (University of Melbourne) (submittedVersion, cc-by-nc-sa)
  • RePEc: Research Papers in Economics (submittedVersion)
  • LSTM Online Archive (Liverpool School of Tropical Medicine) (submittedVersion)
  • Minerva Access (University of Melbourne) (submittedVersion)
  • Spiral (Imperial College London) (submittedVersion, cc-by-nc-sa)
Funders
  • Bill and Melinda Gates Foundation
  • Medical Research Council (MR/K010174/1, MR/J012394/1, MR/K012126/1, EU FP7)
Topics
  • Health Sciences › Medicine › Public Health, Environmental and Occupational Health › Malaria Research and Control
  • Health Sciences › Medicine › Public Health, Environmental and Occupational Health › Mathematical and Theoretical Epidemiology and Ecology Models
  • Life Sciences › Immunology and Microbiology › Immunology › Reproductive System and Pregnancy
Keywords
placental malaria, Plasmodium falciparum, pregnancy, maternal immunity, placental sequestration, placental histology, mathematical model, malaria vaccine, insecticide-treated nets, malaria in pregnancy
MeSH terms
Female, Humans, Placenta Diseases, Pregnancy, Pregnancy Complications, Parasitic, Malaria, Falciparum

About these checks

Registry, retraction, Cites and statistics results are computed, not judged, with one exception: a printed reference that no index lists is read once by a model before it counts as a citation error. Claims are extracted by a model and kept only when their quote appears verbatim in the text; each cited source is then checked, with a model’s help, for whether it says what the claim relies on. Those verdicts can be wrong — read the claim’s quote and the cited source before relying on one.

Statistics and arithmetic are recomputed, not judged.

Confidence bands are shown only for fields calibrated on our annotated test set. None is calibrated yet, so no band is shown.

What counts as a claim ›How we measure confidence ›How we check this ›

Are you an author, or do you see a problem with this page? Request a review