Evidence map›Paper›PMID 33906217›Full record

ArticleThe Journal of infectious diseases2021

Entomological and Anthropological Factors Contributing to Persistent Malaria Transmission in Kenya, Ethiopia, and Cameroon.

Roland Bamou, Martin Rono, Teshome Degefa, Janet Midega, Charles Mbogo, Prophet Ingosi, Alice Kamau, Argaw Ambelu, Zewdie Birhanu, Kora Tushune and 7 more

Open access · hybridAbstract read
In one paragraph

Article in The Journal of infectious diseases, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 29 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
29citing papers in PubMed, 1 pooled it
4.7field-weighted citation impact, top 4% 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

29 citing papers in PubMed, 1 synthesis or guideline pooled it, 57 citations in OpenAlex.

  1. Pooled it
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  7. Characterization of Malaria Outbreak in Marsabit County, Kenya, March 2024.The American journal of tropical medicine and hygiene · 2025
    Article
  8. Human Blood Index ofJournal of tropical medicine · 2025
    Review
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  14. Exploring the relationship betweenThe Pan African medical journal · 2024
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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

17 authors at 7 institutions in 4 countries.

Roland BamouOrganisation de Coordination pour la lutte Contre les Endémies en Afrique Centrale, Yaounde, Cameroon.
Martin RonoKenya Medical Research Institute-Wellcome Trust Research Program, Kilifi,Kenya.
Teshome DegefaSchool of Medical Laboratory Sciences, Faculty of Health Sciences, Jimma University, Jimma, Ethiopia.
Janet MidegaKenya Medical Research Institute-Wellcome Trust Research Program, Kilifi,Kenya.
Charles MbogoKenya Medical Research Institute-Wellcome Trust Research Program, Kilifi,Kenya.
Prophet IngosiPwani University Bioscience Research Centre, Kilifi, Kenya.
Alice KamauKenya Medical Research Institute-Wellcome Trust Research Program, Kilifi,Kenya.
Argaw AmbeluDepartment of Environmental Health Sciences and Technology, Public Health Faculty, Jimma University, Jimma, Ethiopia.
Zewdie BirhanuDepartment of Health, Behavior and Society, Faculty of Public Health, Jimma University, Jimma, Ethiopia.
Kora TushuneDepartment of Health Management, Institute of Health, Jimma University, Jimma, Ethiopia.
Edmond KopyaOrganisation de Coordination pour la lutte Contre les Endémies en Afrique Centrale, Yaounde, Cameroon.
Parfait Awono-AmbeneOrganisation de Coordination pour la lutte Contre les Endémies en Afrique Centrale, Yaounde, Cameroon.
Timoléon TchuinkamVector-Borne Diseases Laboratory, Applied Biology and Ecology Research Unit, Department of Animal Biology, Faculty of Science, University of Dschang, Yaounde, Cameroon.
Flobert NjiokouLaboratory of Parasitology and Ecology, Faculty of Sciences, University of Yaoundé, Yaoundé, Cameroon.
Delenasaw YewhalawSchool of Medical Laboratory Sciences, Faculty of Health Sciences, Jimma University, Jimma, Ethiopia.
Christophe Antonio NkondjioOrganisation de Coordination pour la lutte Contre les Endémies en Afrique Centrale, Yaounde, Cameroon.
Joseph MwangangiCenter for Geographic Medicine Research Coast, Kenya Medical Research Institute, Kilifi, Kenya.
Jimma University · ETKenya Medical Research Institute · KEOrganisation de Coordination pour la lutte contre les Endémies en Afrique Centrale · CMUniversité de Yaoundé I · CMLiverpool School of Tropical Medicine · GBPwani University · KEUniversité de Dschang · CM

Funding

Wellcome Trust 202687/Z/16/Z
6 · The paper itself

Abstract

introductionIn order to improve our understanding of the fundamental limits of core interventions and guide efforts based on prioritization and identification of effective/novel interventions with great potentials to interrupt persistent malaria transmission in the context of high vector control coverage, the drivers of persistent disease transmission were investigated in three eco-epidemiological settings; forested areas in Cameroon, coastal area in Kenya and highland areas in Ethiopia.

methodsMosquitoes were sampled in three eco-epidemiological settings using different entomological sampling techniques and analysed for Plasmodium infection status and blood meal origin in blood-fed specimens. Human behavioural surveys were conducted to assess the knowledge and attitude of the population on malaria and preventive measures, their night activities, and sleeping pattern. The parasitological analysis was conducted to determine the prevalence of Plasmodium infection in the population using rapid diagnostic tests.

resultsDespite the diversity in the mosquito fauna, their biting behaviour was found to be closely associated to human behaviour in the three settings. People in Kenya and Ethiopia were found to be more exposed to mosquito bites during the early hours of the evening (18-21h) while it was in the early morning (4-6 am) in Cameroon. Malaria transmission was high in Cameroon compared to Kenya and Ethiopia with over 50% of the infected bites recorded outdoors. The non-users of LLINs were 2.5 to 3 times more likely to be exposed to the risk of acquiring malaria compared to LLINs users. Malaria prevalence was high (42%) in Cameroon, and more than half of the households visited had at least one individual infected with Plasmodium parasites.

conclusionsThe study suggests high outdoor malaria transmission occurring in the three sites with however different determinants driving residual malaria transmission in these areas.

Indexed as

PlasmodiumAnimalsAnophelesCameroonEthiopiaHumansKenyaMalariaMosquito ControlMosquito VectorsCameroonEthiopiahuman behaviorKenyamalaria vectorspersistent malaria transmission

Identifiers

PMID33906217
PMCPMC8079137
OpenAlexW3159862073

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.