Evidence map›Paper›PMID 31806029›Full record

ArticleMalaria journal2019

Effects of indoor residual spraying and outdoor larval control on Anopheles coluzzii from São Tomé and Príncipe, two islands with pre-eliminated malaria.

Ying-An Chen, Jih-Ching Lien, Lien-Fen Tseng, Chien-Fu Cheng, Wan-Yu Lin, Hurng-Yi Wang, Kun-Hsien Tsai

Open access · goldAbstract read
PubMed Full text at PMC Publisher
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 9 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
9citing papers in PubMed, 1 pooled it
1.8field-weighted citation impact, top 15% 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

9 citing papers in PubMed, 1 synthesis or guideline pooled it, 19 citations in OpenAlex.

  1. Pooled it
  2. Article
  3. Article
  4. Article
  5. Article
  6. Burden of Malaria in Sao Tome and Principe, 1990-2019: Findings from the Global Burden of Disease Study 2019.International journal of environmental research and public health · 2022
    Article
  7. Article
  8. Article
  9. Article
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.

Ying-An ChenInstitute of Environmental and Occupational Health Sciences, College of Public Health, National Taiwan University, Taipei, Taiwan.
Jih-Ching LienInstitute of Environmental and Occupational Health Sciences, College of Public Health, National Taiwan University, Taipei, Taiwan. jclien1217@gmail.com.
Lien-Fen TsengTaiwan Anti-Malaria Advisory Mission, São Tomé, São Tomé and Príncipe.
Chien-Fu ChengTaiwan Anti-Malaria Advisory Mission, São Tomé, São Tomé and Príncipe.
Wan-Yu LinInstitute of Epidemiology and Preventive Medicine, College of Public Health, National Taiwan University, Taipei, Taiwan.
Hurng-Yi WangGraduate Institute of Clinical Medicine, College of Medicine, National Taiwan University, Taipei, Taiwan.
Kun-Hsien TsaiInstitute of Environmental and Occupational Health Sciences, College of Public Health, National Taiwan University, Taipei, Taiwan. kunhtsai@ntu.edu.tw.ORCID http://orcid.org/0000-0002-6154-113X
National Taiwan University · TWNational Taipei University of Nursing and Health Science · TW

Funding

Ministry of Science and Technology, Taiwan 103-2314-B-002-036-MY2
6 · The paper itself

Abstract

backgroundVector control is a key component of malaria prevention. Two major vector control strategies have been implemented in São Tomé and Príncipe (STP), indoor residual spraying (IRS) and outdoor larval control using Bacillus thuringiensis israelensis (Bti). This study evaluated post-intervention effects of control strategies on vector population density, composition, and knockdown resistance mutation, and their implications for malaria epidemiology in STP.

methodsMosquitoes were collected by indoor and outdoor human landing catches and mosquito light traps in seven districts. Mosquito density was calculated by numbers of captured adult mosquitoes/house/working hour. Mitochondrial cytochrome c oxidase subunit I (COI) was PCR amplified and sequenced to understand the spatial-temporal population composition of malaria vector in STP. Knockdown resistance L1014F mutation was detected using allele-specific PCR. To estimate the malaria transmission risks in STP, a negative binomial regression model was constructed. The response variable was monthly incidence, and the explanatory variables were area, rainfall, entomological inoculation rate (EIR), and kdr mutation frequency.

resultsMalaria vector in STP is exophilic Anopheles coluzzii with significant population differentiation between Príncipe and São Tomé (mean F

conclusionsIndoor residual spraying could rapidly decrease Anopheles density and malaria incidence in STP. Outdoor larval control using Bti is a sustainable approach for controlling local vector with exophilic feature and insecticide resistance problem. Vector control interventions should be intensified especially at the north-eastern part of São Tomé to minimize impacts of outbreaks.

Indexed as

AnophelesInsecticidesMosquito ControlMosquito VectorsAnimalsBacillus thuringiensisFemaleLarvaMalariaSao Tome and PrincipeInsecticidesAnopheles coluzziiBacillus thuringiensis israelensisCytochrome c oxidase subunit IIndoor residual sprayingKnockdown resistance mutationSão Tomé and PríncipeVector density

Identifiers

PMID31806029
PMCPMC6896513
OpenAlexW2993447317

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.