Evidence map›Paper›PMID 34188090›Full record

ArticleScientific reports2021

An increasing role of pyrethroid-resistant Anopheles funestus in malaria transmission in the Lake Zone, Tanzania.

Nancy S Matowo, Jackline Martin, Manisha A Kulkarni, Jacklin F Mosha, Eliud Lukole, Gladness Isaya, Boniface Shirima, Robert Kaaya, Catherine Moyes, Penelope A Hancock and 5 more

Abstract read
In one paragraph

Article in Scientific reports, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 35 papers.

0numbers the graph read from it
0cells of the map it votes in
35citing papers in PubMed
–field-weighted citation impact
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

35 citing papers in PubMed.

  1. Trial
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  11. Spatial Distribution and Biodiversity ofTropical medicine and infectious disease · 2025
    Article
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  18. Review
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  20. Characterization of the Tissue and Strain-Specific Microbiota ofTropical medicine and infectious disease · 2024
    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

15 authors.

Nancy S MatowoDepartment of Disease Control, London School of Hygiene and Tropical Medicine, London, UK. Nancy.Matowo@lshtm.ac.uk.
Jackline MartinNational Institute for Medical Research, Mwanza Medical Research Centre, Mwanza, Tanzania.
Manisha A KulkarniSchool of Epidemiology and Public Health, University of Ottawa, Ottawa, Canada.
Jacklin F MoshaNational Institute for Medical Research, Mwanza Medical Research Centre, Mwanza, Tanzania.
Eliud LukoleDepartment of Disease Control, London School of Hygiene and Tropical Medicine, London, UK.
Gladness IsayaKilimanjaro Christian Medical University College, Moshi, Tanzania.
Boniface ShirimaKilimanjaro Christian Medical University College, Moshi, Tanzania.
Robert KaayaKilimanjaro Christian Medical University College, Moshi, Tanzania.
Catherine MoyesBig Data Institute, Li Ka Shing Centre for Health Information and Discovery, University of Oxford, Oxford, UK.
Penelope A HancockBig Data Institute, Li Ka Shing Centre for Health Information and Discovery, University of Oxford, Oxford, UK.
Mark RowlandDepartment of Disease Control, London School of Hygiene and Tropical Medicine, London, UK.
Alphaxard ManjuranoNational Institute for Medical Research, Mwanza Medical Research Centre, Mwanza, Tanzania.
Franklin W MoshaKilimanjaro Christian Medical University College, Moshi, Tanzania.
Natacha Protopopoff *Department of Disease Control, London School of Hygiene and Tropical Medicine, London, UK.
Louisa A Messenger *Department of Disease Control, London School of Hygiene and Tropical Medicine, London, UK. louisa.messenger@lshtm.ac.uk.

Funding

Medical Research Council MR/L004437/1Medical Research Council MR/R006040/1Wellcome Trust
6 · The paper itself

Abstract

Anopheles funestus is playing an increasing role in malaria transmission in parts of sub-Saharan Africa, where An. gambiae s.s. has been effectively controlled by long-lasting insecticidal nets. We investigated vector population bionomics, insecticide resistance and malaria transmission dynamics in 86 study clusters in North-West Tanzania. An. funestus s.l. represented 94.5% (4740/5016) of all vectors and was responsible for the majority of malaria transmission (96.5%), with a sporozoite rate of 3.4% and average monthly entomological inoculation rate (EIR) of 4.57 per house. Micro-geographical heterogeneity in species composition, abundance and transmission was observed across the study district in relation to key ecological differences between northern and southern clusters, with significantly higher densities, proportions and EIR of An. funestus s.l. collected from the South. An. gambiae s.l. (5.5%) density, principally An. arabiensis (81.1%) and An. gambiae s.s. (18.9%), was much lower and closely correlated with seasonal rainfall. Both An. funestus s.l. and An. gambiae s.l. were similarly resistant to alpha-cypermethrin and permethrin. Overexpression of CYP9K1, CYP6P3, CYP6P4 and CYP6M2 and high L1014S-kdr mutation frequency were detected in An. gambiae s.s. populations. Study findings highlight the urgent need for novel vector control tools to tackle persistent malaria transmission in the Lake Region of Tanzania.

Indexed as

AnophelesMosquito ControlMosquito VectorsAnimalsInsecticide ResistanceInsect ProteinsLakesMalariaMutationPyrethrinsTanzaniaInsect ProteinsPyrethrins

Identifiers

PMID34188090
PMCPMC8241841

What OpenQuestion holds

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Registered trials

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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.