Evidence map›Paper›PMID 26489831›Full record

ArticleParasites & vectors2015

What is required in terms of mass drug administration to interrupt the transmission of schistosome parasites in regions of endemic infection?

R M Anderson, H C Turner, S H Farrell, Jie Yang, J E Truscott

Abstract read
In one paragraph

Article in Parasites & vectors, 2015. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 44 papers, 3 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
44citing papers in PubMed, 3 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

44 citing papers in PubMed, 3 syntheses or guidelines pooled it.

  1. Pooled it
  2. Pooled it
  3. Pooled it
  4. Effectiveness of Four Different Interventions Against Schistosoma haematobium in a Seasonal Transmission Setting of Côte d'Ivoire: A Cluster Randomized Trial.Clinical infectious diseases : an official publication of the Infectious Diseases Society of America · 2022
    Trial
  5. SCORE Operational Research on Moving toward Interruption of Schistosomiasis Transmission.The American journal of tropical medicine and hygiene · 2020
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  11. Improving the Cost-efficiency of Preventive Chemotherapy: Impact of New Diagnostics on Stopping Decisions for Control of Schistosomiasis.Clinical infectious diseases : an official publication of the Infectious Diseases Society of America · 2024
    Article
  12. Subtle transcriptomic response of Eurasian perch (International journal for parasitology. Parasites and wildlife · 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

5 authors.

R M AndersonLondon Centre for Neglected Tropical Disease Research, London, UK. roy.anderson@imperial.ac.uk.
H C TurnerLondon Centre for Neglected Tropical Disease Research, London, UK. hugo.turner@imperial.ac.uk.
S H FarrellLondon Centre for Neglected Tropical Disease Research, London, UK. sam.farrell@imperial.ac.uk.
Jie YangLondon Centre for Neglected Tropical Disease Research, London, UK. jie.yang1@imperial.ac.uk.
J E TruscottLondon Centre for Neglected Tropical Disease Research, London, UK. j.truscott@imperial.ac.uk.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundSchistosomiasis is endemic in 54 countries, but has one of the lowest coverages by mass drug administration of all helminth diseases. However, with increasing drug availability through donation, the World Health Organisation has set a goal of increasing coverage to 75 % of at-risk children in endemic countries and elimination in some regions. In this paper, we assess the impact on schistosomiasis of the WHO goals in terms of control and elimination.

methodsWe use an age-structured deterministic model of schistosome transmission in a human community and the effect of mass drug administration. The model is fitted to baseline data from a longitudinal re-infection study in Kenya and validated against the subsequent re-infection data. We examine the impact on host worm burden of the current treatment trend, extrapolated to meet the WHO goals, and its sensitivity to uncertainty in important parameters. We assess the feasibility of achieving elimination.

resultsModel results show that the current treatment trend, extrapolated to the WHO goals, is able to greatly reduce host worm burdens. If coverage is continued at the same level beyond 2020, elimination is possible for low to moderate transmission settings, where transmission intensity is defined by the basic reproduction number, R0. Low levels of adult coverage have a significant impact on worm burden in all settings. Model validation against the re-infection survey demonstrates that the age-structured model is able to match post-treatment data well in terms of egg output, but that some details of re-infection among school children and young adults are not currently well represented.

conclusionsOur work suggests that the current WHO treatment goals should be successful in bringing about a major reduction in schistosome infection in treated communities. If continued over a 15 year period, they are likely to result in elimination, at least in areas with lower transmission.

Indexed as

Endemic DiseasesAnthelminticsDisease EradicationDisease Transmission, InfectiousDrug TherapyHumansModels, TheoreticalSchistosomiasisTime FactorsWorld Health OrganizationAnthelmintics

Identifiers

PMID26489831
PMCPMC4618750

What OpenQuestion holds

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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.