Evidence map›Paper›PMID 18986520›Full record

ArticleMalaria journal2008

Overuse of artemisinin-combination therapy in Mto wa Mbu (river of mosquitoes), an area misinterpreted as high endemic for malaria.

Charles Mwanziva, Seif Shekalaghe, Arnold Ndaro, Bianca Mengerink, Simon Megiroo, Frank Mosha, Robert Sauerwein, Chris Drakeley, Roly Gosling, Teun Bousema

Open access · goldAbstract read
In one paragraph

Article in Malaria journal, 2008. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 34 papers, 2 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
34citing papers in PubMed, 2 pooled it
4.4field-weighted citation impact, top 6% 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

34 citing papers in PubMed, 2 syntheses or guidelines pooled it, 56 citations in OpenAlex.

  1. Pooled it
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  7. Prevalence ofAfrican health sciences · 2020
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  8. Prevalence ofThe East African health research journal · 2018
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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

10 authors at 6 institutions in 4 countries.

Charles MwanzivaDepartment of Medical Microbiology, Radboud University Nijmegen Medical Centre, Nijmegen, The Netherlands. cmwanziva@yahoo.com
Seif Shekalaghe
Arnold Ndaro
Bianca Mengerink
Simon Megiroo
Frank Mosha
Robert Sauerwein
Chris Drakeley
Roly Gosling
Teun Bousema
Radboud University Nijmegen · NLAfrican Malaria Network Trust · TZChristian Medical College & Hospital · INKilimanjaro Christian Medical Centre · TZLondon School of Hygiene & Tropical Medicine · GBRadboud University Medical Center · NL

Funding

Wellcome TrustWellcome Trust 078925
6 · The paper itself

Abstract

backgroundAdequate malaria diagnosis and treatment remain major difficulties in rural sub-Saharan Africa. These issues deserve renewed attention in the light of first-line treatment with expensive artemisinin-combination therapy (ACT) and changing patterns of transmission intensity. This study describes diagnostic and treatment practices in Mto wa Mbu, an area that used to be hyperendemic for malaria, but where no recent assessments of transmission intensity have been conducted.

methodsRetrospective and prospective data were collected from the two major village health clinics. The diagnosis in prospectively collected data was confirmed by microscopy. The level of transmission intensity was determined by entomological assessment and by estimating sero-conversion rates using anti-malarial antibody responses.

resultsMalaria transmission intensity by serological assessment was equivalent to < 1 infectious bites per person per year. Despite low transmission intensity, > 40% of outpatients attending the clinics in 2006-2007 were diagnosed with malaria. Prospective data demonstrated a very high overdiagnosis of malaria. Microscopy was unreliable with < 1% of slides regarded as malaria parasite-positive by clinic microscopists being confirmed by trained research microscopists. In addition, many 'slide negatives' received anti-malarial treatment. As a result, 99.6% (248/249) of the individuals who were treated with ACT were in fact free of malaria parasites.

conclusionTransmission intensity has dropped considerably in the area of Mto wa Mbu. Despite this, most fevers are still regarded and treated as malaria, thereby ignoring true causes of febrile illness and over-prescribing ACT. The discrepancy between the perceived and actual level of transmission intensity may be present in many areas in sub-Saharan Africa and calls for greater efforts in defining levels of transmission on a local scale to help rational drug-prescribing behaviour.

Indexed as

Endemic DiseasesAdolescentAdultAge DistributionAnimalsAnophelesAntibodies, ProtozoanArtemisininsChildChild, PreschoolDrug Therapy, CombinationEthanolaminesFemaleFluorenesHumansInfantAntibodies, ProtozoanartemisininArtemisininsEthanolaminesFluorenesLumefantrine

Identifiers

PMID18986520
PMCPMC2588630
OpenAlexW2043498364

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.