Evidence map›Paper›PMID 29110709›Full record

ArticleMalaria journal2017

The prevalence, incidence and prevention of Plasmodium falciparum infections in forest rangers in Bu Gia Map National Park, Binh Phuoc province, Vietnam: a pilot study.

Do Hung Son, Nguyen Thuy-Nhien, Lorenz von Seidlein, Truong Le Phuc-Nhi, Ngo Thi Phu, Nguyen Thi Kim Tuyen, Nguyen Huyen Tran, Nguyen Van Dung, Bui Van Quan, Nicholas P J Day and 4 more

2 registry-linked trialsOpen access · goldAbstract read
In one paragraph

Article in Malaria journal, 2017. 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 9 papers, 4 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
9citing papers in PubMed, 4 pooled it
0.7field-weighted citation impact, top 22% 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.

NCT02788864 phase4completednot on this map

A Randomized, Placebo-controlled, Double-blind Trial Using Dihydroartemisinine+Piperaquine (DP) to Protect Forest Workers From Malaria in Bu Gia Map National Park

TypeinterventionalSponsorOxford University Clinical Research Unit, VietnamRan2016 to 2016Enrolled150ConditionsMalariaArmsArterakine (DHA/piperaquine), Placebo
NCT04041973 nacompletednot on this mapstarted 2020, after this paper: background citation

An Open-label Individually Randomised Controlled Trial to Assess the Efficacy of Artemether-lumefantrine Prophylaxis for Malaria Among Forest Goers in Cambodia

TypeinterventionalSponsorUniversity of OxfordRan2020 to 2021Enrolled1,480ConditionsMalariaArmsArtemether-lumefantrine, Multivitamin
3 · Its place in the literature

Who cites it

9 citing papers in PubMed, 4 syntheses or guidelines pooled it, 14 citations in OpenAlex.

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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

14 authors at 5 institutions in 4 countries.

Do Hung SonOxford University Clinical Research Unit, Wellcome Trust Major Overseas Programme, Ho Chi Minh City, Vietnam.
Nguyen Thuy-NhienOxford University Clinical Research Unit, Wellcome Trust Major Overseas Programme, Ho Chi Minh City, Vietnam.
Lorenz von SeidleinMahidol Oxford Tropical Medicine Research Unit, Faculty of Tropical Medicine, Mahidol University, Bangkok, Thailand.ORCID 0000-0002-0282-6469
Truong Le Phuc-NhiOxford University Clinical Research Unit, Wellcome Trust Major Overseas Programme, Ho Chi Minh City, Vietnam.
Ngo Thi PhuOxford University Clinical Research Unit, Wellcome Trust Major Overseas Programme, Ho Chi Minh City, Vietnam.
Nguyen Thi Kim TuyenOxford University Clinical Research Unit, Wellcome Trust Major Overseas Programme, Ho Chi Minh City, Vietnam.
Nguyen Huyen TranOxford University Clinical Research Unit, Wellcome Trust Major Overseas Programme, Ho Chi Minh City, Vietnam.
Nguyen Van DungBinh Phuoc Malaria Prevention and Control Center, Dong Xoai, Binh Phuoc, Vietnam.
Bui Van QuanBinh Phuoc Malaria Prevention and Control Center, Dong Xoai, Binh Phuoc, Vietnam.
Nicholas P J DayMahidol Oxford Tropical Medicine Research Unit, Faculty of Tropical Medicine, Mahidol University, Bangkok, Thailand.
Arjen M DondorpMahidol Oxford Tropical Medicine Research Unit, Faculty of Tropical Medicine, Mahidol University, Bangkok, Thailand.
Nicholas J WhiteMahidol Oxford Tropical Medicine Research Unit, Faculty of Tropical Medicine, Mahidol University, Bangkok, Thailand.
Guy E ThwaitesOxford University Clinical Research Unit, Wellcome Trust Major Overseas Programme, Ho Chi Minh City, Vietnam.
Tran Tinh HienOxford University Clinical Research Unit, Wellcome Trust Major Overseas Programme, Ho Chi Minh City, Vietnam. hientt@oucru.org.
Oxford University Clinical Research Unit · VNMahidol University · THCat Tien National Park · VNAngkor Hospital for Children · KHChurchill Hospital · GB

Funding

Wellcome TrustWellcome Trust B9R00770
6 · The paper itself

Abstract

backgroundProphylaxis for high-risk populations, such as forest workers, could be one component for malaria elimination in the Greater Mekong Sub-region. A study was conducted to assess the malaria incidence in forest rangers and the feasibility of malaria prophylaxis for rangers sleeping in forest camps.

methodsForest rangers deployed in the Bu Gia Map National Park, Vietnam were invited to participate in the study. Plasmodium infections were cleared using presumptive treatment, irrespective of malaria status, with a 3-day course dihydroartemisinin/piperaquine (DP) and a 14-day course of primaquine. Before returning to the forest, study participants were randomly allocated to a 3-day course of DP or placebo. Fifteen days after returning from their forest deployment the participants were tested for Plasmodium infections using uPCR.

resultsPrior to treatment, 30 of 150 study participants (20%) were found to be infected with Plasmodium. Seventeen days (median) after enrolment the rangers were randomized to DP or placebo 2 days before returning to forest camps where they stayed between 2 and 20 days (median 9.5 days). One ranger in the DP-prophylaxis arm and one in the placebo arm were found to be infected with Plasmodium falciparum 15 days (median) after returning from the forest. The evaluable P. falciparum isolates had molecular markers indicating resistance to artemisinins (K13-C580Y) and piperaquine (plasmepsin), but none had multiple copies of pfmdr1 associated with mefloquine resistance.

conclusionAnti-malarial prophylaxis in forest rangers is feasible. The findings of the study highlight the threat of multidrug-resistant malaria. Trial registration NCT02788864.

Indexed as

AdultAntibiotic ProphylaxisAntimalarialsArtemisininsDrug Therapy, CombinationFeasibility StudiesHumansIncidenceMalaria, FalciparumMaleOccupational DiseasesParks, RecreationalPilot ProjectsPiperazinesPlasmodium falciparumPrevalenceAntimalarialsArtemisininsartenimolpiperaquinePiperazinesPrimaquineQuinolinesAn. barbirostrisAn. dirusAn. maculatusAnti-malarial resistanceDHAForestKelch K13-C580YPiperaquinePlasmepsinPlasmodium falciparumPlasmodium vivaxProphylaxis

Identifiers

PMID29110709
PMCPMC5674731
OpenAlexW2767597977

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.