Seroprevalence and risk factors for Trypanosoma evansi, the causative agent of surra, in the dromedary camel (Camelus dromedarius) population in Southeastern Algeria

Benaissa Mohamed Houcine, Mimoune Nora, Bentria Younes, Kernif Tahar, Boukhelkhal Abdelaziz, Youngs Curtis R., Kaidi Rachid, Faye Bernard, Halis Youcef. 2020. Seroprevalence and risk factors for Trypanosoma evansi, the causative agent of surra, in the dromedary camel (Camelus dromedarius) population in Southeastern Algeria. Onderstepoort Journal of Veterinary Research, 87 (1):a1891, 9 p.

https://doi.org/10.4102/ojvr.v87i1.1891

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Url - éditeur : https://ojvr.org/index.php/ojvr/article/view/1891

Quartile : Q2, Sujet : VETERINARY SCIENCES

Résumé : Surra, caused by Trypanosoma evansi, is a re-emerging animal trypanosomosis, which is of special concern for camel-rearing regions of Africa and Asia. Surra decreases milk yield, lessens animal body condition score and reduces market value of exported animals resulting in substantial economic losses. A cross-sectional seroprevalence study of dromedary camels was conducted in Algeria, and major risk factors associated with infection were identified by collecting data on animal characteristics and herd management practices. The seroprevalence of T. evansi infection was determined in sera of 865 camels from 82 herds located in eastern Algeria using an antibody test (card agglutination test for Trypanosomiasis – CATT/T. evansi). Individual and herd seroprevalence were 49.5% and 73.2%, respectively, indicating substantial exposure of camels to T. evansi in the four districts studied. Five significant risk factors for T. evansi hemoparasite infection were identified: geographical area, herd size, husbandry system, accessibility to natural water sources and type of watering. There was no association between breed, sex or age with T. evansi infection. Results of this study provide baseline information that will be useful for launching control programmes in the region and potentially elsewhere.

Mots-clés Agrovoc : Trypanosoma evansi, dromadaire, trypanosomose, surra, maladie des animaux, surveillance épidémiologique, facteur de risque, effectif du cheptel, système d'élevage, santé animale

Mots-clés géographiques Agrovoc : Algérie

Mots-clés complémentaires : séroprévalence

Mots-clés libres : Seroprevalence, Trypanosoma evansi, Camelus dromedarius, Camels, Algeria

Classification Agris : L73 - Maladies des animaux
L70 - Sciences et hygiène vétérinaires - Considérations générales

Champ stratégique Cirad : CTS 4 (2019-) - Santé des plantes, des animaux et des écosystèmes

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