Evidence map›Paper›PMID 32174039›Full record

ArticleTransboundary and emerging diseases2020

First detection of Theileria parva in cattle from Cameroon in the absence of the main tick vector Rhipicephalus appendiculatus.

Barberine A Silatsa, Gustave Simo, Naftaly Githaka, Rolin Kamga, Farikou Oumarou, Christian Keambou Tiambo, Eunice Machuka, Jean-Baka Domelevo, David Odongo, Richard Bishop and 4 more

Open access · hybridAbstract read
In one paragraph

Article in Transboundary and emerging diseases, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 16 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
16citing papers in PubMed, 1 pooled it
2.2field-weighted citation impact, top 14% 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

16 citing papers in PubMed, 1 synthesis or guideline pooled it, 30 citations in OpenAlex.

  1. Pooled it
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  5. Morbidity, mortality, and risk factors associated withVeterinary and animal science · 2025
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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

14 authors at 6 institutions in 4 countries.

Barberine A SilatsaBiosciences Eastern and Central Africa - International Livestock Research Institute (BecA-ILRI) Hub, Nairobi, Kenya.ORCID https://orcid.org/0000-0002-7457-4168
Gustave SimoMolecular Parasitology and Entomology Unit, Department of Biochemistry, Faculty of Sciences, University of Dschang, Dschang, Cameroon.
Naftaly GithakaDepartment of Biosciences, International Livestock Research Institute (ILRI), Nairobi, Kenya.
Rolin KamgaMolecular Parasitology and Entomology Unit, Department of Biochemistry, Faculty of Sciences, University of Dschang, Dschang, Cameroon.
Farikou OumarouSpecial Mission for Eradication of Tsetse Flies, Regional tsetse Division of Adamawa, MINEPIA, Adamawa, Cameroon.
Christian Keambou TiamboBiosciences Eastern and Central Africa - International Livestock Research Institute (BecA-ILRI) Hub, Nairobi, Kenya.
Eunice MachukaBiosciences Eastern and Central Africa - International Livestock Research Institute (BecA-ILRI) Hub, Nairobi, Kenya.
Jean-Baka DomelevoBiosciences Eastern and Central Africa - International Livestock Research Institute (BecA-ILRI) Hub, Nairobi, Kenya.
David OdongoSchool of Biological Sciences, University of Nairobi, Nairobi, Kenya.ORCID https://orcid.org/0000-0001-5745-4327
Richard BishopVeterinary Microbiology and Pathology (VMP), Washington State University, Pullman, WA, USA.
Jules-Roger KuiateDepartment of Biochemistry, Faculty of Sciences, University of Dschang, Dschang, Cameroon.
Flobert NjiokouLaboratory of General Biology, Faculty of Sciences, University of Yaounde I, Yaounde, Cameroon.
Appolinaire DjikengBiosciences Eastern and Central Africa - International Livestock Research Institute (BecA-ILRI) Hub, Nairobi, Kenya.
Roger PelleBiosciences Eastern and Central Africa - International Livestock Research Institute (BecA-ILRI) Hub, Nairobi, Kenya.
International Livestock Research Institute · KEUniversité de Dschang · CMMinistry of Livestock, Fisheries and Animal Industries · CMUniversité de Yaoundé I · CMUniversity of Nairobi · KEWashington State University · US

Funding

Australian Agency for International DevelopmentBill & Melinda Gates Foundation OPP1075938German Academic Exchange Service 57220758Swedish Ministry of Foreign AffairsSyngenta Foundation for Sustainable Agriculture
6 · The paper itself

Abstract

A major risk factor for the spread of livestock diseases and their vectors is the uncontrolled transboundary movement of live animals for trade and grazing. Such movements constrain effective control of tick-transmitted pathogens, including Theileria parva. Only limited studies have been undertaken to identify ticks and tick-borne diseases (TTBDs) affecting cattle in central African countries, including Cameroon. We hereby report the collection of baseline data on the prevalence of T. parva in Cameroon through a countrywide cross-sectional survey, conducted in 2016, involving collection of blood samples from cattle from 63 sites across the five agro-ecological zones (AEZs) of the country. ELISA-based surveillance of infected cattle was performed on 479 randomly selected samples and revealed specific antibodies to T. parva in 22.7% and T. mutans in 41.1% of cattle. Screening of 1,340 representative DNA samples for the presence of T. parva identified 25 (1.86%) positives using a p104 antigen gene-based nested PCR assay. The positives were distributed across agro-ecological zones I, II, III and V. None of the p104 positive cattle exhibited clinical symptoms of East Coast fever (ECF). Using reverse line blot (RLB), 58 (4.3%) and 1,139 (85%) of the samples reacted with the T. parva and T. mutans oligonucleotide probes, respectively. This represents the first report of T. parva from Cameroon. Surprisingly, no Rhipicephalus appendiculatus ticks, the main vector of T. parva, were identified in a parallel study involving comprehensive morphological and molecular survey of tick species present in the country. Only two of the 25 p104 positive cattle were PCR-positive for the CD8+ T-cell target schizont-expressed antigen gene Tp1. Cloning and sequencing of Tp1 amplicons revealed sequence identity with the reference T. parva Muguga. This new finding raises serious concerns of a potential spread of ECF into the central African region.

Indexed as

Africa, CentralAnimalsArachnid VectorsCameroonCattleCattle DiseasesCross-Sectional StudiesPolymerase Chain ReactionRhipicephalusSchizontsTheileria parvaTheileriasisTick-Borne DiseasesCamerooncattleEast Coast feveridentificationTheileria parva

Identifiers

PMID32174039
PMCPMC7216920
OpenAlexW3011259256

What OpenQuestion holds

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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.