Evidence map›Paper›PMID 31522689›Full record

ArticleParasites & vectors2019

Mapping the baseline prevalence of lymphatic filariasis across Nigeria.

Obiora A Eneanya, Claudio Fronterre, Ifeoma Anagbogu, Chukwu Okoronkwo, Tini Garske, Jorge Cano, Christl A Donnelly

Abstract read
In one paragraph

Article in Parasites & vectors, 2019. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 17 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
17citing papers in PubMed, 1 pooled it
–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

17 citing papers in PubMed, 1 synthesis or guideline pooled it.

  1. Pooled it
  2. Article
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  5. Observational
  6. Burden, knowledge and perception of lymphatic filariasis in resource - poor communities in north central Nigeria.Journal of parasitic diseases : official organ of the Indian Society for Parasitology · 2024
    Article
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  16. Artificial intelligence and lymphedema: State of the art.Journal of clinical and translational research · 2022
    Review
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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.

Obiora A EneanyaMRC Centre for Global Infectious Disease Analysis, Department of Infectious Disease Epidemiology, Imperial College London, London, UK. o.eneanya13@imperial.ac.uk.
Claudio FronterreFaculty of Infectious and Tropical Diseases, London School of Hygiene and Tropical Medicine, London, UK.
Ifeoma AnagboguFederal Ministry of Health, Abuja, Nigeria.
Chukwu OkoronkwoFederal Ministry of Health, Abuja, Nigeria.
Tini GarskeMRC Centre for Global Infectious Disease Analysis, Department of Infectious Disease Epidemiology, Imperial College London, London, UK.
Jorge CanoFaculty of Infectious and Tropical Diseases, London School of Hygiene and Tropical Medicine, London, UK.
Christl A DonnellyMRC Centre for Global Infectious Disease Analysis, Department of Infectious Disease Epidemiology, Imperial College London, London, UK.

Funding

Bill and Melinda Gates Foundation OPP 1033751Commonwealth Scholarship Commission NGCA-2015-051Medical Research Council MR/R015600/1
6 · The paper itself

Abstract

introductionThe baseline endemicity profile of lymphatic filariasis (LF) is a key benchmark for planning control programmes, monitoring their impact on transmission and assessing the feasibility of achieving elimination. Presented in this work is the modelled serological and parasitological prevalence of LF prior to the scale-up of mass drug administration (MDA) in Nigeria using a machine learning based approach.

methodsLF prevalence data generated by the Nigeria Lymphatic Filariasis Control Programme during country-wide mapping surveys conducted between 2000 and 2013 were used to build the models. The dataset comprised of 1103 community-level surveys based on the detection of filarial antigenemia using rapid immunochromatographic card tests (ICT) and 184 prevalence surveys testing for the presence of microfilaria (Mf) in blood. Using a suite of climate and environmental continuous gridded variables and compiled site-level prevalence data, a quantile regression forest (QRF) model was fitted for both antigenemia and microfilaraemia LF prevalence. Model predictions were projected across a continuous 5 × 5 km gridded map of Nigeria. The number of individuals potentially infected by LF prior to MDA interventions was subsequently estimated.

resultsMaps presented predict a heterogeneous distribution of LF antigenemia and microfilaraemia in Nigeria. The North-Central, North-West, and South-East regions displayed the highest predicted LF seroprevalence, whereas predicted Mf prevalence was highest in the southern regions. Overall, 8.7 million and 3.3 million infections were predicted for ICT and Mf, respectively.

conclusionsQRF is a machine learning-based algorithm capable of handling high-dimensional data and fitting complex relationships between response and predictor variables. Our models provide a benchmark through which the progress of ongoing LF control efforts can be monitored.

Indexed as

Topography, MedicalAdolescentAdultAgedAged, 80 and overElephantiasis, FilarialEpidemiologic MethodsFemaleHumansImmunoassayMachine LearningMaleMiddle AgedNigeriaParasitologyPrevalenceAntigenaemiaLymphatic filariasisMachine learningMicrofilaraemia

Identifiers

PMID31522689
PMCPMC6745770

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LicenceCC BY
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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.