Evidence map›Paper›PMID 28081253›Full record

ArticlePLoS pathogens2017

Probability of Transmission of Malaria from Mosquito to Human Is Regulated by Mosquito Parasite Density in Naïve and Vaccinated Hosts.

Thomas S Churcher, Robert E Sinden, Nick J Edwards, Ian D Poulton, Thomas W Rampling, Patrick M Brock, Jamie T Griffin, Leanna M Upton, Sara E Zakutansky, Katarzyna A Sala and 3 more

Open access · goldAbstract read
In one paragraph

Article in PLoS pathogens, 2017. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 72 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
72citing papers in PubMed, 1 pooled it
16.9field-weighted citation impact, top 1% 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

72 citing papers in PubMed, 1 synthesis or guideline pooled it, 152 citations in OpenAlex.

  1. Pooled it
  2. Trial
  3. Controlled Human Malaria Infection with Graded Numbers ofThe American journal of tropical medicine and hygiene · 2018
    Trial
  4. Trial
  5. Article
  6. Towards an evolutionary baseline model ofbioRxiv : the preprint server for biology · 2025
    Article
  7. Evaluation ofiScience · 2025
    Article
  8. Review
  9. Article
  10. Article
  11. Article
  12. Malaria Vectors andTropical medicine and infectious disease · 2024
    Article
  13. Article
  14. Article
  15. Article
  16. Article
  17. Article
  18. An immune memory-structured SIS epidemiological model for hyperdiverse pathogens.Proceedings of the National Academy of Sciences of the United States of America · 2023
    Article
  19. Article
  20. Article

12 more citing papers are in PubMed but not listed here.

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

13 authors at 2 institutions in 1 country.

Thomas S ChurcherMRC Centre for Outbreak Analysis and Modelling, Infectious Disease Epidemiology, Imperial College London, London, United Kingdom.ORCID 0000-0002-8442-0525
Robert E SindenDepartment of Life Sciences, Imperial College London, South Kensington, London, United Kingdom.
Nick J EdwardsThe Jenner Institute, University of Oxford, Roosevelt Drive, Oxford, United Kingdom.ORCID 0000-0002-7030-7839
Ian D PoultonThe Jenner Institute, University of Oxford, Roosevelt Drive, Oxford, United Kingdom.
Thomas W RamplingThe Jenner Institute, University of Oxford, Roosevelt Drive, Oxford, United Kingdom.ORCID 0000-0001-9111-2486
Patrick M BrockMRC Centre for Outbreak Analysis and Modelling, Infectious Disease Epidemiology, Imperial College London, London, United Kingdom.ORCID 0000-0002-1035-1619
Jamie T GriffinMRC Centre for Outbreak Analysis and Modelling, Infectious Disease Epidemiology, Imperial College London, London, United Kingdom.
Leanna M UptonDepartment of Life Sciences, Imperial College London, South Kensington, London, United Kingdom.
Sara E ZakutanskyDepartment of Life Sciences, Imperial College London, South Kensington, London, United Kingdom.ORCID 0000-0001-7964-9782
Katarzyna A SalaDepartment of Life Sciences, Imperial College London, South Kensington, London, United Kingdom.
Fiona AngrisanoDepartment of Life Sciences, Imperial College London, South Kensington, London, United Kingdom.
Adrian V S HillThe Jenner Institute, University of Oxford, Roosevelt Drive, Oxford, United Kingdom.
Andrew M BlagboroughDepartment of Life Sciences, Imperial College London, South Kensington, London, United Kingdom.
Imperial College London · GBUniversity of Oxford · GB

Funding

Medical Research Council G1002284Medical Research Council MR/N00227X/1
6 · The paper itself

Abstract

Over a century since Ronald Ross discovered that malaria is caused by the bite of an infectious mosquito it is still unclear how the number of parasites injected influences disease transmission. Currently it is assumed that all mosquitoes with salivary gland sporozoites are equally infectious irrespective of the number of parasites they harbour, though this has never been rigorously tested. Here we analyse >1000 experimental infections of humans and mice and demonstrate a dose-dependency for probability of infection and the length of the host pre-patent period. Mosquitoes with a higher numbers of sporozoites in their salivary glands following blood-feeding are more likely to have caused infection (and have done so quicker) than mosquitoes with fewer parasites. A similar dose response for the probability of infection was seen for humans given a pre-erythrocytic vaccine candidate targeting circumsporozoite protein (CSP), and in mice with and without transfusion of anti-CSP antibodies. These interventions prevented infection more efficiently from bites made by mosquitoes with fewer parasites. The importance of parasite number has widespread implications across malariology, ranging from our basic understanding of the parasite, how vaccines are evaluated and the way in which transmission should be measured in the field. It also provides direct evidence for why the only registered malaria vaccine RTS,S was partially effective in recent clinical trials.

Indexed as

AnimalsAnophelesAntibodies, ProtozoanDisease Models, AnimalHumansInsect VectorsMalariaMalaria VaccinesMicePlasmodiumPopulation DynamicsProtozoan ProteinsSalivary GlandsSporozoitesVaccinationAntibodies, ProtozoanMalaria VaccinesProtozoan Proteins

Identifiers

PMID28081253
PMCPMC5230737
OpenAlexW2578940280

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.