Evidence map›Paper›PMID 25460345›Full record

ArticleActa tropica2015

Subtle changes in Plasmodium falciparum infection complexity following enhanced intervention in Malawi.

Tamika J Sisya, Raphael M Kamn'gona, Jimmy A Vareta, Joseph M Fulakeza, Mavuto F J Mukaka, Karl B Seydel, Miriam K Laufer, Terrie E Taylor, Standwell C Nkhoma

Abstract read
In one paragraph

Article in Acta tropica, 2015. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 25 papers.

0numbers the graph read from it
0cells of the map it votes in
25citing papers in PubMed
–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

25 citing papers in PubMed.

  1. Trial
  2. Article
  3. BMJ open · 2024
    Observational
  4. Article
  5. Sampling for malaria molecular surveillance.Trends in parasitology · 2023
    Review
  6. Article
  7. Article
  8. Article
  9. Article
  10. Article
  11. Article
  12. Article
  13. Review
  14. Review
  15. Article
  16. Intra-host dynamics of co-infecting parasite genotypes in asymptomatic malaria patients.Infection, genetics and evolution : journal of molecular epidemiology and evolutionary genetics in infectious diseases · 2018
    Article
  17. Review
  18. Article
  19. Article
  20. Article
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

9 authors.

Tamika J SisyaMalawi-Liverpool-Wellcome Trust Clinical Research Programme, University of Malawi College of Medicine, Blantyre, Malawi.
Raphael M Kamn'gonaMalawi-Liverpool-Wellcome Trust Clinical Research Programme, University of Malawi College of Medicine, Blantyre, Malawi.
Jimmy A VaretaBlantyre Malaria Project, University of Malawi College of Medicine, Blantyre, Malawi.
Joseph M FulakezaMalawi-Liverpool-Wellcome Trust Clinical Research Programme, University of Malawi College of Medicine, Blantyre, Malawi; Blantyre Malaria Project, University of Malawi College of Medicine, Blantyre, Malawi.
Mavuto F J MukakaDepartment of International Health, Bloomberg School of Public Health, Johns Hopkins University, Baltimore, MD, USA.
Karl B SeydelBlantyre Malaria Project, University of Malawi College of Medicine, Blantyre, Malawi; Osteopathic Medical Specialties, College of Osteopathic Medicine, Michigan State University, East Lansing, MI, USA.
Miriam K LauferBlantyre Malaria Project, University of Malawi College of Medicine, Blantyre, Malawi; Center for Vaccine Development, University of Maryland School of Medicine, Baltimore, MD, USA.
Terrie E TaylorBlantyre Malaria Project, University of Malawi College of Medicine, Blantyre, Malawi; Osteopathic Medical Specialties, College of Osteopathic Medicine, Michigan State University, East Lansing, MI, USA.
Standwell C NkhomaMalawi-Liverpool-Wellcome Trust Clinical Research Programme, University of Malawi College of Medicine, Blantyre, Malawi; Liverpool School of Tropical Medicine, Pembroke Place, L3 5QA Liverpool, UK. Electronic address: snkhoma@mlw.medcol.mw.

Funding

The role of monocytes in the pathology of severe malaria.U19AI089683 · NIAID · MICHIGAN STATE UNIVERSITY · PI MATHANGA, DON P · 2010 to 2023
$21.4M
NIAID NIH HHS 1U19AI089683-01NIAID NIH HHS U19 AI089683Wellcome Trust 099992/Z/12/ZWellcome Trust 100890Wellcome Trust 101113
6 · The paper itself

Abstract

With support from the Global Fund, the United States President's Malaria Initiative (PMI) and other cooperating partners, Malawi is implementing a comprehensive malaria control programme involving indoor residual spraying in targeted districts, universal coverage with insecticide-treated bed nets, use of rapid diagnostic tests to confirm the clinical diagnosis of malaria and use of the highly effective artemisinin-based combination therapy, artemether-lumefantrine (AL), as the first-line treatment for malaria. We genotyped 24 genome-wide single nucleotide polymorphisms (SNPs) in Plasmodium falciparum infections (n=316) sampled from a single location in Malawi before (2006 and 2007) and after enhanced intervention (2008 and 2012). The SNP data generated were used to examine temporal changes in the proportion of multiple-genotype infections (MIs), mean number of heterozygous SNPs within MIs, parasite genetic diversity (expected heterozygosity and genotypic richness), multilocus linkage disequilibrium and effective population size (N(e)). While the proportion of MIs, expected heterozygosity, genotypic richness, multilocus linkage disequilibrium and Ne were unchanged over time, the mean number (±standard deviation) of heterozygous SNPs within MIs decreased significantly (p=0.01) from 9(±1) in 2006 to 7(±1) in 2012. These findings indicate that the genetic diversity of P. falciparum malaria parasites in this area remains high, suggesting that only subtle gains, if any, have been made in reducing malaria transmission. Continued surveillance is required to evaluate the impact of malaria control interventions in this area and the rest of Malawi, and to better target control interventions.

Indexed as

ArtemisininsChild, PreschoolGenetic VariationGenotypeHumansInfantInfant, NewbornInsecticide-Treated BednetsMalaria, FalciparumMalawiMosquito ControlPlasmodium falciparumPolymorphism, Single NucleotidePopulation DensityartemisininArtemisininsEffective population sizeGenetic differentiationGenetic diversityMalaria control interventionsMultiple-genotype infectionsPlasmodium falciparum

Identifiers

PMID25460345
PMCPMC4296692

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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.