Evidence map›Paper›PMID 18783630›Full record

ArticleMalaria journal2008

Failure to detect Plasmodium vivax in West and Central Africa by PCR species typing.

Richard L Culleton, Toshihiro Mita, Mathieu Ndounga, Holger Unger, Pedro V L Cravo, Giacomo M Paganotti, Nobuyuki Takahashi, Akira Kaneko, Hideaki Eto, Halidou Tinto and 7 more

Open access · goldAbstract read
In one paragraph

Article in Malaria journal, 2008. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 54 papers, 2 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
54citing papers in PubMed, 2 pooled it
7.6field-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

54 citing papers in PubMed, 2 syntheses or guidelines pooled it, 88 citations in OpenAlex.

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  18. Key Knowledge Gaps for Plasmodium vivax Control and Elimination.The American journal of tropical medicine and hygiene · 2016
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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

17 authors at 10 institutions in 9 countries.

Richard L CulletonLaboratory of Malariology, International Research Centre of Infectious Diseases, Research Institute of Microbial Diseases, Osaka University, Osaka, Japan. richard@nagasaki-u.ac.jp
Toshihiro Mita
Mathieu Ndounga
Holger Unger
Pedro V L Cravo
Giacomo M Paganotti
Nobuyuki Takahashi
Akira Kaneko
Hideaki Eto
Halidou Tinto
Corine Karema
Umberto D'Alessandro
Virgilio do Rosário
Takatoshi Kobayakawa
Francine Ntoumi
Richard Carter
Kazuyuki Tanabe
Tokyo Women's Medical University · JPInfraestruturas de Portugal (Portugal) · PTOsaka University · JPUniversity of Edinburgh · GBAlbert Schweitzer Hospital · GACentre Muraz · BFInstituut voor Tropische Geneeskunde · BEIstituto Pasteur · ITKarolinska University Hospital · SEWildlife Conservation Society Congo · CG

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundPlasmodium vivax is estimated to affect 75 million people annually. It is reportedly absent, however, from west and central Africa due to the high prevalence of the Duffy negative phenotype in the indigenous populations. Despite this, non-African travellers consistently return to their own countries with P. vivax malaria after visiting this region. An attempt was made, therefore, to detect the presence of P. vivax parasites in blood samples collected from the indigenous populations of west and central Africa.

methodsParasite species typing (for all four human malaria parasites) was carried out by PCR on 2,588 blood samples collected from individuals from nine African malaria-endemic countries.

resultsMost infections (98.5%) were Plasmodium falciparum, Plasmodium malariae was identified in 8.5% of all infections, and Plasmodium ovale in 3.9%. The prevalence of both parasites varied greatly by country. Only one case of P. vivax was detected from Sao Tome, an island off the west coast of Africa, confirming the scarcity of this parasite in Africa.

conclusionThe prevalence of P. vivax in local populations in sub-Saharan Africa is very low, despite the frequent identification of this parasite in non-African travellers.

Indexed as

AdolescentAdultAfrica, CentralAfrica, WesternAgedAged, 80 and overAnimalsBloodChildChild, PreschoolHumansInfantInfant, NewbornMalaria, VivaxMiddle AgedPlasmodium falciparum

Identifiers

PMID18783630
PMCPMC2546428
OpenAlexW2145064143

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.