Evidence map›Paper›PMID 33066826›Full record

ArticleParasites & vectors2020

Point prevalence mapping reveals hotspot for onchocerciasis transmission in the Ndikinimeki Health District, Centre Region, Cameroon.

René Afor Aza'ah, Laurentine Sumo, Ngum Helen Ntonifor, Jean Bopda, Rolph H Bamou, Hugues C Nana-Djeunga

Open access · goldAbstract read
In one paragraph

Article in Parasites & vectors, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 12 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
12citing papers in PubMed, 1 pooled it
0.2field-weighted citation impact, top 33% 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

12 citing papers in PubMed, 1 synthesis or guideline pooled it, 14 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

6 authors at 2 institutions in 1 country.

René Afor Aza'ahDepartment of Biological Sciences, Faculty of Science, University of Bamenda, Bambili, Cameroon.
Laurentine SumoDepartment of Biological Sciences, Faculty of Science, University of Bamenda, Bambili, Cameroon. sumolaure@yahoo.fr.
Ngum Helen NtoniforDepartment of Biological Sciences, Faculty of Science, University of Bamenda, Bambili, Cameroon.
Jean BopdaCentre for Research on Filariasis and other Tropical Diseases (CRFilMT), Yaounde, Cameroon.
Rolph H BamouCentre for Research on Filariasis and other Tropical Diseases (CRFilMT), Yaounde, Cameroon.
Hugues C Nana-DjeungaCentre for Research on Filariasis and other Tropical Diseases (CRFilMT), Yaounde, Cameroon. nanadjeunga@crfilmt.org.ORCID http://orcid.org/0000-0002-4496-6048
University of Bamenda · CMInstitut de Recherches Géologiques et Minières · CM

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundIvermectin-based preventive chemotherapy (PC) is distributed annually to all at-risk populations eligible for ivermectin treatment to control and/or eliminate onchocerciasis. Information on the impact of mass ivermectin administration on onchocerciasis transmission is scanty, and it is tricky to appreciate the progress towards elimination and engage corrective measures. To fill that gap in the Centre Region in Cameroon, the current onchocerciasis endemicity level in the Ndikinimeki Health District after about two decades of mass treatments was assessed.

methodsA cluster-based cross-sectional survey was carried out in the Ndikinimeki Health District and all volunteers aged ≥ 5 years were (i) interviewed on their compliance to ivermectin over the past five years and (ii) underwent clinical (nodule palpation and visual search for onchocercal lesions) and parasitological examinations (skin snip) for onchocerciasis.

resultsThe overall Onchocerca volvulus prevalence was 7.0% (95% CI: 5.2-9.3%). The prevalence of the disease was significantly higher in the communities Kiboum 1 and Kiboum 2 compared to the other communities (highest prevalence in Makénéné Town Water: 8.5%; 95% CI: 2.3-20.4%) (χ

conclusionsThis study has revealed that the Ndikinimeki Health District is hypo-endemic for onchocerciasis after about two decades of preventive chemotherapy. However, transmission is ongoing, with potential hotspots in the Kiboum 1 and Kiboum 2 communities, which are known as first-line communities (closest to the breeding sites of the vector). Alternative or complementary strategies to annual ivermectin appear compulsory to accelerate the momentum towards onchocerciasis elimination.

Indexed as

AdolescentAdultAnimalsAntiparasitic AgentsCameroonChildChild, PreschoolCross-Sectional StudiesEndemic DiseasesFemaleHumansIvermectinMaleMass Drug AdministrationMiddle AgedOnchocerca volvulusAntiparasitic AgentsIvermectinCameroonCDTIHotspotNdikinimeki Health DistrictOnchocerciasis

Identifiers

PMID33066826
PMCPMC7565768
OpenAlexW3093135098

What OpenQuestion holds

Textmetadata
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.