Evidence map›Paper›PMID 33534886›Full record

ArticleThe Journal of infectious diseases2021

Plasmodium vivax From Duffy-Negative and Duffy-Positive Individuals Share Similar Gene Pools in East Africa.

Daniel Kepple, Alfred Hubbard, Musab M Ali, Beka R Abargero, Karen Lopez, Kareen Pestana, Daniel A Janies, Guiyun Yan, Muzamil Mahdi Hamid, Delenasaw Yewhalaw and 1 more

Open access · greenAbstract read
In one paragraph

Article in The Journal of infectious diseases, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 18 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
18citing papers in PubMed, 1 pooled it
3.1field-weighted citation impact, top 9% 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

18 citing papers in PubMed, 1 synthesis or guideline pooled it, 24 citations in OpenAlex.

  1. Pooled it
  2. Article
  3. Article
  4. Article
  5. Adaptive evolution ofbioRxiv : the preprint server for biology · 2025
    Article
  6. Article
  7. Article
  8. Article
  9. Review
  10. Article
  11. Article
  12. Prevalence and characteristics ofmedRxiv : the preprint server for health sciences · 2023
    Article
  13. Article
  14. Relationship between Duffy Genotype/Phenotype and Prevalence ofTropical medicine and infectious disease · 2023
    Review
  15. Article
  16. The Black Box of Cellular and Molecular Events ofInternational journal of molecular sciences · 2022
    Review
  17. Review
  18. Gene Polymorphisms AmongFrontiers in cellular and infection microbiology · 2021
    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

11 authors at 4 institutions in 3 countries.

Daniel KeppleBiological Sciences, University of North Carolina at Charlotte, Charlotte, North Carolina, USA.ORCID 0000-0003-0566-3623
Alfred HubbardBioinformatics and Genomics, University of North Carolina at Charlotte, Charlotte, North Carolina, USA.
Musab M AliDepartment of Parasitology and Medical Entomology, Institute of Endemic Diseases, University of Khartoum, Khartoum, Sudan.
Beka R AbargeroTropical Infectious Disease Research Center, Jimma University, Jimma, Ethiopia.
Karen LopezBioinformatics and Genomics, University of North Carolina at Charlotte, Charlotte, North Carolina, USA.
Kareen PestanaBiological Sciences, University of North Carolina at Charlotte, Charlotte, North Carolina, USA.
Daniel A JaniesBioinformatics and Genomics, University of North Carolina at Charlotte, Charlotte, North Carolina, USA.
Guiyun YanProgram in Public Health, University of California at Irvine, Irvine, California, USA.
Muzamil Mahdi HamidDepartment of Parasitology and Medical Entomology, Institute of Endemic Diseases, University of Khartoum, Khartoum, Sudan.
Delenasaw YewhalawTropical Infectious Disease Research Center, Jimma University, Jimma, Ethiopia.
Eugenia LoBiological Sciences, University of North Carolina at Charlotte, Charlotte, North Carolina, USA.
University of North Carolina at Charlotte · USJimma University · ETUniversity of Khartoum · SDUniversity of California, Irvine · US

Funding

Vector Biology of Invasive Anopheles stephensi in Rural to Urban Landscapes in EthiopiaU19AI129326 · NIAID · UNIVERSITY OF CALIFORNIA-IRVINE · PI Delenasaw Yewhalaw · 2017 to 2026
$19.9M
Ecology of African Highland MalariaR01AI050243 · NIAID · UNIVERSITY OF CALIFORNIA-IRVINE · PI YAN, GUIYUN · 2001 to 2018
$8.8M
Research Training in Mosquito Genomics and Bioinformat*D43TW001505 · FIC · UNIVERSITY OF CALIFORNIA-IRVINE · PI Guiyun Yan · 2000 to 2026
$6.0M
Comparative Genomics of Plasmodium vivax: Insights into Duffy Negative Erythrocyte InvasionR15AI138002 · NIAID · UNIVERSITY OF NORTH CAROLINA CHARLOTTE · PI LO, EUGENIA · 2018 to 2018
$433k
FIC NIH HHS D43 TW001505NIAID NIH HHS R01 AI050243NIAID NIH HHS R15 AI138002NIAID NIH HHS U19 AI129326
6 · The paper itself

Abstract

Plasmodium vivax malaria was thought to be rare in Africa, but an increasing number of P. vivax cases reported across Africa and in Duffy-negative individuals challenges this dogma. The genetic characteristics of P. vivax in Duffy-negative infections, the transmission of P. vivax in East Africa, and the impact of environments on transmission remain largely unknown. This study examined genetic and transmission features of P. vivax from 107 Duffy-negative and 305 Duffy-positive individuals in Ethiopia and Sudan. No clear genetic differentiation was found in P. vivax between the 2 Duffy groups, indicating between-host transmission. P. vivax from Ethiopia and Sudan showed similar genetic clusters, except samples from Khartoum, possibly due to distance and road density that inhibited parasite gene flow. This study is the first to show that P. vivax can transmit to and from Duffy-negative individuals and provides critical insights into the spread of P. vivax in sub-Saharan Africa.

Indexed as

Africa, EasternDuffy Blood-Group SystemErythrocytesGene PoolGenetic VariationHumansMalaria, VivaxPlasmodium vivaxReceptors, Cell SurfaceSudanDuffy Blood-Group SystemReceptors, Cell SurfaceDuffy-negativeEast Africagenetic diversityPlasmodium vivaxtransmission pathways

Identifiers

PMID33534886
PMCPMC8557672
OpenAlexW3128723553

What OpenQuestion holds

Textmetadata
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.