Evidence map›Paper›PMID 26020959›Full record

ArticlePLoS pathogens2015

Admixture in Humans of Two Divergent Plasmodium knowlesi Populations Associated with Different Macaque Host Species.

Paul C S Divis, Balbir Singh, Fread Anderios, Shamilah Hisam, Asmad Matusop, Clemens H Kocken, Samuel A Assefa, Craig W Duffy, David J Conway

Open access · goldAbstract read
In one paragraph

Article in PLoS pathogens, 2015. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 58 papers, 2 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
58citing papers in PubMed, 2 pooled it
13.2field-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

58 citing papers in PubMed, 2 syntheses or guidelines pooled it, 89 citations in OpenAlex.

  1. Pooled it
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  16. Observational
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  18. Frontiers in cellular and infection microbiology · 2021
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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 at 5 institutions in 3 countries.

Paul C S DivisPathogen Molecular Biology Department, London School of Hygiene and Tropical Medicine, London, United Kingdom; Malaria Research Centre, Faculty of Medicine and Health Sciences, University Malaysia Sarawak, Kuching, Sarawak, Malaysia.
Balbir SinghMalaria Research Centre, Faculty of Medicine and Health Sciences, University Malaysia Sarawak, Kuching, Sarawak, Malaysia.
Fread AnderiosSabah State Public Health Laboratory, Kota Kinabalu, Sabah, Malaysia.
Shamilah HisamInstitute for Medical Research, Kuala Lumpur, Malaysia.
Asmad MatusopMalaria Research Centre, Faculty of Medicine and Health Sciences, University Malaysia Sarawak, Kuching, Sarawak, Malaysia; Sarawak State Health Department, Kuching, Sarawak, Malaysia.
Clemens H KockenBiomedical Primate Research Centre, Rijswijk, The Netherlands.
Samuel A AssefaPathogen Molecular Biology Department, London School of Hygiene and Tropical Medicine, London, United Kingdom.
Craig W DuffyPathogen Molecular Biology Department, London School of Hygiene and Tropical Medicine, London, United Kingdom.
David J ConwayPathogen Molecular Biology Department, London School of Hygiene and Tropical Medicine, London, United Kingdom; Malaria Research Centre, Faculty of Medicine and Health Sciences, University Malaysia Sarawak, Kuching, Sarawak, Malaysia.
London School of Hygiene & Tropical Medicine · GBUniversiti Malaysia Sarawak · MYBiomedical Primate Research Centre · NLInstitute for Medical Research · MYUniversity of London · GB

Funding

Medical Research Council G1100123
6 · The paper itself

Abstract

Human malaria parasite species were originally acquired from other primate hosts and subsequently became endemic, then spread throughout large parts of the world. A major zoonosis is now occurring with Plasmodium knowlesi from macaques in Southeast Asia, with a recent acceleration in numbers of reported cases particularly in Malaysia. To investigate the parasite population genetics, we developed sensitive and species-specific microsatellite genotyping protocols and applied these to analysis of samples from 10 sites covering a range of >1,600 km within which most cases have occurred. Genotypic analyses of 599 P. knowlesi infections (552 in humans and 47 in wild macaques) at 10 highly polymorphic loci provide radical new insights on the emergence. Parasites from sympatric long-tailed macaques (Macaca fascicularis) and pig-tailed macaques (M. nemestrina) were very highly differentiated (FST = 0.22, and K-means clustering confirmed two host-associated subpopulations). Approximately two thirds of human P. knowlesi infections were of the long-tailed macaque type (Cluster 1), and one third were of the pig-tailed-macaque type (Cluster 2), with relative proportions varying across the different sites. Among the samples from humans, there was significant indication of genetic isolation by geographical distance overall and within Cluster 1 alone. Across the different sites, the level of multi-locus linkage disequilibrium correlated with the degree of local admixture of the two different clusters. The widespread occurrence of both types of P. knowlesi in humans enhances the potential for parasite adaptation in this zoonotic system.

Indexed as

AnimalsAsia, SoutheasternDisease ReservoirsDNA, ProtozoanGenotypeHumansMacaca fascicularisMacaca nemestrinaMalariaMalaysiaMicrosatellite RepeatsMonkey DiseasesPlasmodium knowlesiPolymerase Chain ReactionZoonosesDNA, Protozoan

Identifiers

PMID26020959
PMCPMC4447398
OpenAlexW2109887382

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.