Evidence map›Paper›PMID 21762577›Full record

ArticleEmerging infectious diseases2011

Co-infections of Plasmodium knowlesi, P. falciparum, and P. vivax among Humans and Anopheles dirus Mosquitoes, Southern Vietnam.

Ron P Marchand, Richard Culleton, Yoshimasa Maeno, Nguyen Tuyen Quang, Shusuke Nakazawa

2 registry-linked trialsAbstract read
In one paragraph

Article in Emerging infectious diseases, 2011. The graph could read no effect estimate from its abstract, so it casts no vote on the map. It is linked to 2 registered trials, which are not on this map. Cited by 99 papers, 8 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
99citing papers in PubMed, 8 pooled it
–field-weighted citation impact
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.

NCT01708876 phase3completednot on this mapstarted 2012, after this paper: background citation

Artesunate-mefloquine vs Chloroquine in Patients With Acute Uncomplicated P. Knowlesi and P. Vivax Malaria: a Randomized Open Label Trial in Sabah, Malaysia

TypeinterventionalSponsorMenzies School of Health ResearchRan2012 to 2014Enrolled250ConditionsUncomplicated Plasmodium Knowlesi MalariaArmsArtesunate-mefloquine, Chloroquine, Primaquine
NCT02001012 phase3completednot on this mapstarted 2014, after this paper: background citation

Artemether-lumefantrine vs Chloroquine in Patients With Acute Uncomplicated P. Knowlesi Malaria: a Randomized Open Label Trial in Sabah, Malaysia (CAN KNOW Trial)

TypeinterventionalSponsorMenzies School of Health ResearchRan2014 to 2015Enrolled123ConditionsUncomplicated Knowlesi MalariaArmsArtemether-lumefantrine combination, Chloroquine
3 · Its place in the literature

Who cites it

99 citing papers in PubMed, 8 syntheses or guidelines pooled it.

  1. Pooled it
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  6. The Role of Human Behavior inInternational journal of environmental research and public health · 2022
    Pooled it
  7. Pooled it
  8. Pooled it
  9. Trial
  10. Article
  11. International journal of molecular sciences · 2025
    Article
  12. Impact of environmental factors on the bionomics ofOne health (Amsterdam, Netherlands) · 2025
    Review
  13. First molecular detection of zoonoticInternational journal for parasitology. Parasites and wildlife · 2025
    Article
  14. Review
  15. Article
  16. Article
  17. Article
  18. Microorganisms · 2024
    Review
  19. Improved limit of detection for zoonoticmedRxiv : the preprint server for health sciences · 2024
    Article
  20. High Abundance ofInsects · 2024
    Article

39 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

5 authors.

Ron P MarchandMedical Committee Netherlands-Vietnam, Khanh Hoa Province, Vietnam. ronmarch@gmail.com
Richard Culleton
Yoshimasa Maeno
Nguyen Tuyen Quang
Shusuke Nakazawa

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

A single Anopheles dirus mosquito carrying sporozoites of Plasmodium knowlesi, P. falciparum, and P. vivax was recently discovered in Khanh Phu, southern Vietnam. Further sampling of humans and mosquitoes in this area during 2009-2010 showed P. knowlesi infections in 32 (26%) persons with malaria (n = 125) and in 31 (43%) sporozoite-positive An. dirus mosquitoes (n = 73). Co-infections of P. knowlesi and P. vivax were predominant in mosquitoes and humans, while single P. knowlesi infections were found only in mosquitoes. P. knowlesi-co-infected patients were largely asymptomatic and were concentrated among ethnic minority families who commonly spend nights in the forest. P. knowlesi carriers were significantly younger than those infected with other malaria parasite species. These results imply that even if human malaria could be eliminated, forests that harbor An. dirus mosquitoes and macaque monkeys will remain a reservoir for the zoonotic transmission of P. knowlesi.

Indexed as

Malaria, FalciparumMalaria, VivaxAdultAnimalsAnophelesDisease ReservoirsDNA FingerprintingFemaleHumansInsect VectorsMacacaMaleMicroscopyPlasmodium falciparumPlasmodium knowlesiPlasmodium vivaxRNA, Ribosomal, 18S

Identifiers

PMID21762577
PMCPMC3381379

What OpenQuestion holds

Textmetadata
LicenceCC BY
Read underepoch 390

Registered trials

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.