Evidence map›Paper›PMID 25889702›Full record

ArticleParasites & vectors2015

Epidemiology of Trypanosoma evansi and Trypanosoma vivax in domestic animals from selected districts of Tigray and Afar regions, Northern Ethiopia.

Hadush Birhanu, Regassa Fikru, Mussa Said, Weldu Kidane, Tadesse Gebrehiwot, Ashenafi Hagos, Tola Alemu, Tesfaye Dawit, Dirk Berkvens, Bruno Maria Goddeeris and 1 more

Open access · goldAbstract 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 33 papers, 4 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
33citing papers in PubMed, 4 pooled it
5.5field-weighted citation impact, top 4% 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

33 citing papers in PubMed, 4 syntheses or guidelines pooled it, 101 citations in OpenAlex.

  1. Pooled it
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  8. Trypanosoma evansi in Brazil: first evidence of infection in equines from Northeast region.Revista brasileira de parasitologia veterinaria = Brazilian journal of veterinary parasitology : Orgao Oficial do Colegio Brasileiro de Parasitologia Veterinaria · 2025
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  14. Molecular and phylogenetic analysis of a type K1 strainBiochemistry and biophysics reports · 2023
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  20. Efficacy of diminazene diaceturate and isometamidium chloride hydrochloride for the treatment ofJournal of parasitic diseases : official organ of the Indian Society for Parasitology · 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 5 institutions in 2 countries.

Hadush BirhanuCollege of Veterinary Medicine, Mekelle University, P. O. Box 2084, Mekelle, Ethiopia. hadushbirhanu@yahoo.com.
Regassa FikruDepartment of Biosystems, KU Leuven, Faculty of Bioscience Engineering, Kasteelpark Arenberg 30, B-3001, Leuven, Belgium. fikruregassa@yahoo.com.
Mussa SaidDepartment of Statistics, College of Natural and Computational Sciences, Mekelle University, P.O.Box 231, Mekelle, Ethiopia. mussasaid3226@gmail.com.
Weldu KidaneCollege of Veterinary Medicine, Mekelle University, P. O. Box 2084, Mekelle, Ethiopia. kidaneweldu21@yahoo.com.
Tadesse GebrehiwotCollege of Veterinary Medicine, Mekelle University, P. O. Box 2084, Mekelle, Ethiopia. tadessse498@yahoo.com.
Ashenafi HagosCollege of Veterinary Medicine and Agriculture, Addis Ababa University, P.O. Box 34, Bishoftu, Ethiopia. hagos83@yahoo.com.
Tola AlemuCollege of Veterinary Medicine and Agriculture, Addis Ababa University, P.O. Box 34, Bishoftu, Ethiopia. alemu.tola@yahoo.com.
Tesfaye DawitSchool of Veterinary Medicine, Hawassa University, P.O. Box 05, Hawassa, Ethiopia. dawit89@yahoo.com.
Dirk BerkvensDepartment of Biomedical Sciences, Institute of Tropical Medicine, Nationalestraat 155, Antwerp, Belgium. dberkvens@itg.be.
Bruno Maria GoddeerisDepartment of Biosystems, KU Leuven, Faculty of Bioscience Engineering, Kasteelpark Arenberg 30, B-3001, Leuven, Belgium. bruno.goddeeris@kuleuven.be.
Philippe BüscherDepartment of Biomedical Sciences, Institute of Tropical Medicine, Nationalestraat 155, Antwerp, Belgium. pbuscher@itg.be.
Addis Ababa University · ETInstituut voor Tropische Geneeskunde · BEMekelle University · ETHawassa University · ETKU Leuven · BE

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundAfrican animal trypanosomosis, transmitted cyclically by tsetse flies or mechanically by other biting flies, causes serious inflictions to livestock health. This study investigates the extent of non-tsetse transmitted animal trypanosomosis (NTTAT) by Trypanosoma (T.) evansi and T. vivax in domestic animals in the tsetse-free regions of Northern Ethiopia, Afar and Tigray.

methodsA cross sectional study was conducted on 754 dromedary camels, 493 cattle, 264 goats, 181 sheep, 84 donkeys, 25 horses and 10 mules. The microhaematocrit centrifugation technique was used as parasitological test. Plasma was collected for serodiagnosis with CATT/T.evansi and RoTat 1.2 immune trypanolysis (ITL) while buffy coat specimens were collected for molecular diagnosis with T. evansi type A specific RoTat 1.2 PCR, T. evansi type B specific EVAB PCR and T. vivax specific TvPRAC PCR.

resultsThe parasitological prevalence was 4.7% in Tigray and 2.7% in Afar and significantly higher (z = 2.53, p = 0.011) in cattle (7.3%) than in the other hosts. Seroprevalence in CATT/T.evansi was 24.6% in Tigray and 13.9% in Afar and was significantly higher (z = 9.39, p < 0.001) in cattle (37.3%) than in the other hosts. On the other hand, seroprevalence assessed by ITL was only 1.9% suggesting cross reaction of CATT/T.evansi with T. vivax or other trypanosome infections. Molecular prevalence of T. evansi type A was 8.0% in Tigray and in Afar and varied from 28.0% in horses to 2.2% in sheep. It was also significantly higher (p < 0.001) in camel (11.7%) than in cattle (6.1%), donkey (6%), goat (3.8%), and sheep (2.2%). Four camels were positive for T. evansi type B. Molecular prevalence of T. vivax was 3.0% and was similar in Tigray and Afar. It didn't differ significantly among the host species except that it was not detected in horses and mules.

conclusionsNTTAT caused by T. vivax and T. evansi, is an important threat to animal health in Tigray and Afar. For the first time, we confirm the presence of T. evansi type B in Ethiopian camels. Unexplained results obtained with the current diagnostic tests in bovines warrant particular efforts to isolate and characterise trypanosome strains that circulate in Northern Ethiopia.

Indexed as

AnimalsEthiopiaLivestockMolecular EpidemiologyTrypanosomaTrypanosomiasis

Identifiers

PMID25889702
PMCPMC4403896
OpenAlexW2024156697

What OpenQuestion holds

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LicenceCC BY
Read underepoch 390

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.