Evidence map›Paper›PMID 30866934›Full record

ArticleMalaria journal2019

Indoor residual spray bio-efficacy and residual activity of a clothianidin-based formulation (SumiShield

Leonard M Ngwej, Izak Hattingh, Godwill Mlambo, Emmanuel M Mashat, Jean-Christophe K Kashala, Françoise K Malonga, Michael J Bangs

Open access · goldAbstract read
In one paragraph

Article in Malaria journal, 2019. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 20 papers.

0numbers the graph read from it
0cells of the map it votes in
20citing papers in PubMed
3.4field-weighted citation impact, top 8% 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

20 citing papers in PubMed, 41 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

7 authors at 2 institutions in 2 countries.

Leonard M NgwejChina Molybdenum Co., Ltd./International SOS Malaria Control Programme, Tenke Fungurume Mining, Fungurume, Lualaba Province, Democratic Republic of the Congo. dvmngwej@gmail.com.
Izak HattinghChina Molybdenum Co., Ltd./International SOS Malaria Control Programme, Tenke Fungurume Mining, Fungurume, Lualaba Province, Democratic Republic of the Congo.
Godwill MlamboChina Molybdenum Co., Ltd./International SOS Malaria Control Programme, Tenke Fungurume Mining, Fungurume, Lualaba Province, Democratic Republic of the Congo.
Emmanuel M MashatChina Molybdenum Co., Ltd./International SOS Malaria Control Programme, Tenke Fungurume Mining, Fungurume, Lualaba Province, Democratic Republic of the Congo.
Jean-Christophe K KashalaFaculty of Veterinary Medicine, University of Lubumbashi, Lubumbashi, Democratic Republic of the Congo.
Françoise K MalongaSchool of Public Health, University of Lubumbashi, Lubumbashi, Democratic Republic of the Congo.
Michael J BangsChina Molybdenum Co., Ltd./International SOS Malaria Control Programme, Tenke Fungurume Mining, Fungurume, Lualaba Province, Democratic Republic of the Congo.
University of Lubumbashi · CDKasetsart University · TH

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundBio-efficacy and residual activity of SumiShield

methodsContact surface bioassays were conducted for 48 weeks on four types of walls (unbaked clay, baked clay, cement, painted cement) in simulated semi-field experimental conditions using two different doses of clothianidin active ingredient (200 mg ai/sq m and 300 mg ai/sq m). Additionally, two types of walls (painted cement and baked clay) were examined in occupied houses using the 300-mg dosage. Laboratory-reared An. arabiensis were exposed to treated surfaces or untreated (controls) for 30 min. Mortality was recorded at 24-h intervals for 120 h.

resultsUnder semi-field experimental conditions, there was no significant difference in mortality over time between the two doses of clothianidin. The mortality rates remained above 60% up to 48 weeks on all four wall surface types. The formulation performed better on cement and unbaked clay with a mean final mortality rate above 90%. Under natural conditions, there was no significant difference in response between baked clay and painted cement walls with a mean final mortality rate above 90%. The insecticide also performed significantly better in natural settings compared to semi-field experimental conditions.

conclusionDepending on the type of experimental surface, the residual activity of the two doses of clothianidin was between 28 and 48 weeks based on a 60% mortality endpoint. Clothianidin at 300 mg ai/sq m applied on two house walls (baked clay or painted cement) performed equally well (> 80% mortality) on both surfaces up to week 41 (approximately 9.5 months). Extended bioassay holding periods (up to 120 h) may present with excess natural mortality in the untreated controls, thus complicating analysis.

Indexed as

AerosolsAnimalsAnophelesBiological AssayDemocratic Republic of the CongoFemaleGuanidinesInsecticidesMalariaMosquito ControlNeonicotinoidsSurvival AnalysisThiazolesTime FactorsTreatment OutcomeAerosolsclothianidinGuanidinesInsecticidesNeonicotinoidsThiazolesBio-efficacyClothianidinDemocratic Republic of the CongoMosquito vector controlResidual activity

Identifiers

PMID30866934
PMCPMC6417189
OpenAlexW2939351431

What OpenQuestion holds

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LicenceCC BY
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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.