Evidence map›Paper›PMID 36587191›Full record

ArticleMalaria journal2022

Effectiveness of seasonal malaria chemoprevention in three regions of Togo: a population-based longitudinal study from 2013 to 2020.

Tchaa A Bakai, Anne Thomas, Jean Iwaz, Tinah Atcha-Oubou, Tchassama Tchadjobo, Nagham Khanafer, Muriel Rabilloud, Nicolas Voirin

Registry-linked trialAbstract read
In one paragraph

Article in Malaria journal, 2022. The graph could read no effect estimate from its abstract, so it casts no vote on the map. It is linked to trial NCT06173206 (Effect of Single-course Malaria Chemoprevention on Clearance of and Protection From Plasmodium Falciparum Infection in the Presence of Resistance-associated Genotypes in Cameroon), which is not on this 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
–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.

NCT06173206 phase3completednot on this mapstarted 2024, after this paper: background citation

Effect of Single-course Malaria Chemoprevention on Clearance of and Protection From Plasmodium Falciparum Infection in the Presence of Resistance-associated Genotypes in Cameroon

TypeinterventionalSponsorLondon School of Hygiene and Tropical MedicineRan2024 to 2025Enrolled902ConditionsMalariaArmsSP (Macleods Pharmaceuticals Ltd), SPAQ (Guilin Pharmaceuticals), AS (Guilin Pharmaceuticals)
3 · Its place in the literature

Who cites it

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

  1. Pooled it
  2. Parasitological efficacy of seasonal malaria chemoprevention in Nampula, northern Mozambique.Transactions of the Royal Society of Tropical Medicine and Hygiene · 2026
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  10. A proposed method of grading malaria chemoprevention efficacy.Transactions of the Royal Society of Tropical Medicine and Hygiene · 2023
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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

8 authors.

Tchaa A BakaiUniversité de Lyon, Lyon, France.
Anne ThomasUniversité de Lyon, Lyon, France.
Jean IwazUniversité de Lyon, Lyon, France.
Tinah Atcha-OubouProgramme National de Lutte contre le Paludisme (PNLP), 01 BP 518, Lomé, Togo.
Tchassama TchadjoboProgramme National de Lutte contre le Paludisme (PNLP), 01 BP 518, Lomé, Togo.
Nagham KhanaferService d'Hygiène, Épidémiologie et Prévention, Hôpital Édouard Herriot, Hospices Civils de Lyon, 69003, Lyon, France.
Muriel RabilloudUniversité de Lyon, Lyon, France.
Nicolas VoirinEPIMOD (Epidemiology and Modelling in Infectious Diseases), 01240, Lent, France. nivoirin@gmail.com.

Funding

Association Nationale de la Recherche et de la Technologie (ANRT) CIFRE 2017/1805Région Auvergne-Rhône-Alpes Grant 19 003 721 01
6 · The paper itself

Abstract

backgroundIn 2012, the World Health Organization (WHO) recommended seasonal malaria chemoprevention (SMC) in areas of high seasonal transmission. Though implemented since 2013, the effectiveness of SMC in Togo was never evaluated.

methodsThis study concerned routine data from 2013 to 2020 mass SMC campaigns for children under five in all health facilities of three Regions of Togo. Treatment coverage, reasons for non-treatment, and SMC-attributable adverse reactions were analysed per year and treatment round. Random effect logistic models estimated SMC effectiveness per health district, year, and treatment round.

resultsThe overall coverage was 98% (7,971,877 doses for 8,129,668 children). Contraindication was the main reason for non-administration. Over the study period, confirmed malaria cases decreased from 11,269 (1st round of 2016) to 1395 (4th round of 2020). Only 2,398 adverse reactions were reported (prevalence: 3/10,000), but no severe Lyell syndrome or Stevens-Johnson-type skin reaction. Compared to 2016, malaria prevalence decrease was estimated at 22.6% in 2017 (p < 0.001) and 75% in 2020 (p < 0.001). SMC effectiveness ranged from 76.6% (2nd round) to 96.2% (4th round) comparison with the 1st round.

conclusionsSMC reduced significantly malaria cases among children under five. The results reassure all actors and call for effort intensification to reach the WHO goals for 2030.

Indexed as

AntimalarialsMalariaChemopreventionChildHumansInfantLongitudinal StudiesSeasonsTogoAntimalarialsChildrenEffectivenessSeasonal malaria chemopreventionTogo

Identifiers

PMID36587191
PMCPMC9804945

What OpenQuestion holds

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Registered trials

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.