Evidence map›Paper›PMID 32933567›Full record

ArticleParasites & vectors2020

New vectors in northern Sarawak, Malaysian Borneo, for the zoonotic malaria parasite, Plasmodium knowlesi.

Joshua X D Ang, Khamisah A Kadir, Dayang S A Mohamad, Asmad Matusop, Paul C S Divis, Khatijah Yaman, Balbir Singh

Open access · goldAbstract read
In one paragraph

Article in Parasites & vectors, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 35 papers, 3 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
35citing papers in PubMed, 3 pooled it
6.5field-weighted citation impact, top 3% 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

35 citing papers in PubMed, 3 syntheses or guidelines pooled it, 55 citations in OpenAlex.

  1. Pooled it
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  16. Microorganisms · 2024
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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

7 authors at 1 institution in 1 country.

Joshua X D AngMalaria Research Centre, Faculty of Medicine & Health Sciences, Universiti Malaysia Sarawak, Kuching, Sarawak, Malaysia.ORCID http://orcid.org/0000-0002-4710-8831
Khamisah A KadirMalaria Research Centre, Faculty of Medicine & Health Sciences, Universiti Malaysia Sarawak, Kuching, Sarawak, Malaysia.
Dayang S A MohamadMalaria Research Centre, Faculty of Medicine & Health Sciences, Universiti Malaysia Sarawak, Kuching, Sarawak, Malaysia.
Asmad MatusopSarawak Department of Health, Kuching, Sarawak, Malaysia.
Paul C S DivisMalaria Research Centre, Faculty of Medicine & Health Sciences, Universiti Malaysia Sarawak, Kuching, Sarawak, Malaysia.
Khatijah YamanMalaria Research Centre, Faculty of Medicine & Health Sciences, Universiti Malaysia Sarawak, Kuching, Sarawak, Malaysia.
Balbir SinghMalaria Research Centre, Faculty of Medicine & Health Sciences, Universiti Malaysia Sarawak, Kuching, Sarawak, Malaysia. bsingh@unimas.my.
Universiti Malaysia Sarawak · MY

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundPlasmodium knowlesi is a significant cause of human malaria in Sarawak, Malaysian Borneo. Only one study has been previously undertaken in Sarawak to identify vectors of P. knowlesi, where Anopheles latens was incriminated as the vector in Kapit, central Sarawak. A study was therefore undertaken to identify malaria vectors in a different location in Sarawak.

methodsMosquitoes found landing on humans and resting on leaves over a 5-day period at two sites in the Lawas District of northern Sarawak were collected and identified. DNA samples extracted from salivary glands of Anopheles mosquitoes were subjected to nested PCR malaria-detection assays. The small subunit ribosomal RNA (SSU rRNA) gene of Plasmodium was sequenced, and the internal transcribed spacer 2 (ITS2) and mitochondrial cytochrome c oxidase subunit 1 (cox1) gene of the mosquitoes were sequenced from the Plasmodium-positive samples for phylogenetic analysis.

resultsTotals of 65 anophelines and 127 culicines were collected. By PCR, 6 An. balabacensis and 5 An. donaldi were found to have single P. knowlesi infections while 3 other An. balabacensis had either single, double or triple infections with P. inui, P. fieldi, P. cynomolgi and P. knowlesi. Phylogenetic analysis of the Plasmodium SSU rRNA gene confirmed 3 An. donaldi and 3 An. balabacensis with single P. knowlesi infections, while 3 other An. balabacensis had two or more Plasmodium species of P. inui, P. knowlesi, P. cynomolgi and some species of Plasmodium that could not be conclusively identified. Phylogenies inferred from the ITS2 and/or cox1 sequences of An. balabacensis and An. donaldi indicate that they are genetically indistinguishable from An. balabacensis and An. donaldi, respectively, found in Sabah, Malaysian Borneo.

conclusionsPreviously An. latens was identified as the vector for P. knowlesi in Kapit, central Sarawak, Malaysian Borneo, and now An. balabacensis and An. donaldi have been incriminated as vectors for zoonotic malaria in Lawas, northern Sarawak.

Indexed as

AnimalsAnophelesBorneoCulexElectron Transport Complex IVHumansInsect ProteinsMalariaMosquito VectorsPhylogenyPlasmodium knowlesiZoonosesElectron Transport Complex IVInsect ProteinsAnopheles balabacensisAnopheles donaldiMalariaPlasmodium knowlesiVectorZoonosis

Identifiers

PMID32933567
PMCPMC7490903
OpenAlexW3086529223

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.