Evidence map›Paper›PMID 32993638›Full record

ArticleBMC veterinary research2020

Molecular prevalence of emerging Anaplasma and Ehrlichia pathogens in apparently healthy dairy cattle in peri-urban Nairobi, Kenya.

Shepelo Getrude Peter, Gabriel Oluga Aboge, Hellen Wambui Kariuki, Esther Gathoni Kanduma, Daniel Waweru Gakuya, Ndichu Maingi, Charles Matiku Mulei, Alfred Omwando Mainga

Open access · goldAbstract read
In one paragraph

Article in BMC veterinary research, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 22 papers, 3 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
22citing papers in PubMed, 3 pooled it
2.8field-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

22 citing papers in PubMed, 3 syntheses or guidelines pooled it, 32 citations in OpenAlex.

  1. Pooled it
  2. Pooled it
  3. Pooled it
  4. Review
  5. An Integrative Assessment ofJournal of tropical medicine · 2026
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  9. Snapshot Study of the Family Anaplasmataceae,Journal of arthropod-borne diseases · 2024
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  12. Pathogens (Basel, Switzerland) · 2023
    Review
  13. Tick-borne diseases in Egypt: A one health perspective.One health (Amsterdam, Netherlands) · 2022
    Review
  14. Article
  15. Article
  16. High diversity ofFrontiers in microbiology · 2022
    Article
  17. Article
  18. Article
  19. Article
  20. Screening and Analysis ofFrontiers in veterinary science · 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

8 authors at 1 institution in 1 country.

Shepelo Getrude PeterDepartment of Clinical Studies, Faculty of Veterinary Medicine University of Nairobi, Nairobi, Kenya. shepelo@uonbi.ac.ke.ORCID http://orcid.org/0000-0002-2188-3303
Gabriel Oluga AbogeDepartment of Public Health Pharmacology and Toxicology, Faculty of Veterinary Medicine University of Nairobi, Nairobi, Kenya.
Hellen Wambui KariukiDepartment of Microbiology, School of Medicine, University of Nairobi, Nairobi, Kenya.
Esther Gathoni KandumaDepartment of Biochemistry, School of Medicine, University of Nairobi, Nairobi, Kenya.
Daniel Waweru GakuyaDepartment of Clinical Studies, Faculty of Veterinary Medicine University of Nairobi, Nairobi, Kenya.
Ndichu MaingiDepartment of Veterinary Pathology, Microbiology and Parasitology, University of Nairobi, Nairobi, Kenya.
Charles Matiku MuleiDepartment of Clinical Studies, Faculty of Veterinary Medicine University of Nairobi, Nairobi, Kenya.
Alfred Omwando MaingaDepartment of Public Health Pharmacology and Toxicology, Faculty of Veterinary Medicine University of Nairobi, Nairobi, Kenya.
University of Nairobi · KE

Funding

Carnegie Corporation of New York B 8606.R02DELTAS Africa Initiative 107768/Z/15/ZSwedish International Development Cooperation Agency 54100113
6 · The paper itself

Abstract

backgroundAnaplasma and Ehrlichia species are tick-borne pathogens of both veterinary and public health importance. The current status of these pathogens, including emerging species such as Ehrlichia minasensis and Anaplasma platys, infecting cattle in Kenya, remain unclear, mainly because of limitation in the diagnostic techniques. Therefore, we investigated the Anaplasma and Ehrlichia species infecting dairy cattle in Nairobi, Kenya using molecular methods.

resultsA total of 306 whole blood samples were collected from apparently healthy dairy cattle. Whole blood DNA was extracted and tested for presence of Anaplasma and Ehrlichia DNA through amplification and sequencing of the 16S rDNA gene. Sequence identity was confirmed using BLASTn analysis while phylogenetic reconstruction was performed to determine the genetic relationship between the Kenyan isolates and other annotated genotypes available in GenBank. Anaplasma and Ehrlichia species were detected in 19.9 and 3.3% of all the samples analyzed, respectively. BLASTn analysis of the sequences against non-redundant GenBank nucleotide database revealed infections with A. platys (44.8%), A. marginale (31%) and A. bovis (13.8%). All four sequenced Ehrlichia spp. were similar to Ehrlichia minasensis. Nucleotide polymorphism was observed for A. platys, A. bovis and E. minasensis. The Anaplasma species clustered in four distinct phylogenetic clades including A. marginale, A. platys, A. bovis and some unidentified Anaplasma spp. The Kenyan Ehrlichia minasensis clustered in the same clade with isolates from America and Australia but distant from E. ruminantium.

conclusionThis study provides the first report of infection of dairy cattle in Kenya with A. platys and E. minasensis, which are emerging pathogens. We conclude that cattle in peri-urban Nairobi are infected with various species of Anaplasma and E. minasensis. To understand the extent of these infections in other parts of the country, large-scale screening studies as well as vector identification is necessary to inform strategic control.

Indexed as

AnaplasmaAnaplasmosisAnimalsCattleCattle DiseasesDairyingDNA, BacterialEhrlichiaEhrlichiosisKenyaPhylogenyPrevalenceSequence Analysis, DNADNA, Bacterial16S rDNAAnaplasma platysEhrlichia minasensisMolecular diagnosticsPhylogeneticsTick-borne pathogensTicks

Identifiers

PMID32993638
PMCPMC7526178
OpenAlexW3090568975

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.