Evidence map›Paper›PMID 34532234›Full record

ArticleMalariaWorld journal2017

Spatial repellents and malaria transmission in an endemic area of Cambodia with high mosquito net usage.

Jacques D Charlwood, Tom Hall, Somalay Nenhep, Emily Rippon, Ana Branca-Lopes, Keith Steen, Bruno Arca, Chris Drakeley

Open access · greenAbstract read
In one paragraph

Article in MalariaWorld journal, 2017. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 8 papers, 2 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
8citing papers in PubMed, 2 pooled it
1.2field-weighted citation impact, top 17% 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

8 citing papers in PubMed, 2 syntheses or guidelines pooled it, 15 citations in OpenAlex.

  1. Pooled it
  2. eLife · 2021
    Pooled it
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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

8 authors at 3 institutions in 2 countries.

Jacques D CharlwoodDepartment of Entomology, Liverpool School of Tropical Medicine, Liverpool L3 5QA, UK.
Tom HallLondon School of Hygiene and Tropical Medicine, Kepple Street/Gower Street, London WC1E, UK.
Somalay NenhepCentro Nacional de Malaria, (CNM) Phnom Penh, Cambodia.
Emily RipponDepartment of Entomology, Liverpool School of Tropical Medicine, Liverpool L3 5QA, UK.
Ana Branca-LopesDepartment of Entomology, Liverpool School of Tropical Medicine, Liverpool L3 5QA, UK.
Keith SteenDepartment of Entomology, Liverpool School of Tropical Medicine, Liverpool L3 5QA, UK.
Bruno ArcaDepartment of Public Health and Infectious Diseases, Division of Parasitology, Sapienza University, Piazzale Aldo Moro 5, 00185 Rome, Italy.
Chris DrakeleyLondon School of Hygiene and Tropical Medicine, Kepple Street/Gower Street, London WC1E, UK.
Liverpool School of Tropical Medicine · GBCambodia National Malaria Center · KHUniversity of London · GB

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundThe spread of artemisinin resistant malaria from SE Asia to the rest of the world remains a threat that will only be ended by eliminating malaria from the region. Novel control approaches are required to mitigate this threat. Spatial repellents (SR) are one such approach. We therefore conducted a multiple cross-over experiment from April 2013 - April 2014, in which all houses in one of two villages in Mondolkiri Province, Cambodia were alternately supplied with an emanator of the spatial repellent metofluthrin per 30 m MATERIAL AND

methodsMosquito densities were simultaneously monitored in each village for two weeks every month using six CDC light-traps/night run from 18.00 to 07.00 hrs inside bedrooms and malaria prevalence, seroconversion and gSG6 protein rates assessed from prevalence surveys. After emanators were installed in the first village they were installed in the second village for a further three-month period and following that were again used in the initial village for a further three months. Surveys were undertaken before the initial installation of the emanators and at each cross-over point.

results

conclusionAt the malaria transmission levels present in Mondolkiri the metofluthrin emanators evaluated had no observable effect on malaria prevalence. This may be due to confounding by low prevalence rates.

Identifiers

PMID34532234
PMCPMC8415066
OpenAlexW3201614737

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.