Etude de la prévalence de la brucellose bovine en zone forestière de la Côte d’Ivoire

Thys, É.; Yahaya, M. A.; Walravens, Karl; Baudoux, C.; Bagayoko, I.; Berkvens, Dirk; Geerts, S.

doi:10.19182/remvt.9913

Cited by 7 publications

(4 citation statements)

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“…Because no prior data were available for Niger, the specificity (Sp) and sensitivity (Se) of the iELISA were the values of the study carried out on traditional livestock farming systems in Ivory Coast by Thys et al [14] . The values of Se and Sp for the iELISA and their 95% confidence intervals based on this study were as follows: …”

Section: Methodsmentioning

confidence: 99%

“…The disease incidence is influenced by management factors, herd size, population density, type of animal breed and biological features such as herd immunity [6] , [7] , [8] , [9] , [10] , [11] . In West Africa, the rates of infection vary greatly from one country to another, within a country and production systems [12] , [13] , [14] , [15] , [16] . It is generally accepted that the prevalence of brucellosis is much higher in the pastoral grazing systems than the urban and periurban systems where herd sizes are smaller [5] , [10] , [17] , [18] , [19] .…”

Section: Introductionmentioning

confidence: 99%

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Seroprevalence and Potential Risk Factors for Brucella Spp. Infection in Traditional Cattle, Sheep and Goats Reared in Urban, Periurban and Rural Areas of Niger

et al. 2013

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IntroductionIn Niamey, Niger, interactions within the interface between animals, humans and the environment induce a potential risk of brucellosis transmission between animals and from animals to humans. Currently, little is known about the transmission of Brucella in this context.Results5,192 animals from 681 herds were included in the study. Serum samples and hygroma fluids were collected. A household survey enabled to identify the risk factors for transmission of brucellosis. The true adjusted herd-level prevalence of brucellosis ranged between 11.2% and 17.2% and the true adjusted animal-population level prevalence was 1.3% (95% CI: 0.9–1.8%) based on indirect ELISA test for Brucella antibodies. Animals aged of 1–4 years were found to be more susceptible than animals less than 1 year old (Odds ratio [OR] of 2.7; 95% CI: 1.43–5.28). For cattle, the odds of brucellosis seropositivity were higher in rural compared to the periurban areas (OR of 2.8; 95% CI: 1.48–5.17) whereas for small ruminants the risk of seropositivity appeared to be higher in urban compared to periurban areas (OR of 5.5; 95% CI: 1.48–20.38). At herd level, the risk of transmission was increased by transhumance (OR of 5.4; 95% CI: 2.84–10.41), the occurrence of abortions (OR of 3.0; 95% CI: 1.40–6.41), and for herds having more than 50 animals (OR of 11.0; 95% CI: 3.75–32.46). Brucella abortus biovar 3 was isolated from the hygromas.Conclusionbrucellosis in Niger is a serious problem among cattle especially in the rural areas around Niamey and among sheep in the urban areas of Niamey. The seroprevalence varies across strata and animal species with important risk factors including herd size, abortion and transhumance at herd level and age at animal population level. For effective control of brucellosis, an integrated approach seems appropriate involving all stakeholders working in public and animal health.

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Section: Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Seroprevalence and Potential Risk Factors for Brucella Spp. Infection in Traditional Cattle, Sheep and Goats Reared in Urban, Periurban and Rural Areas of Niger

et al. 2013

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“…However, seroprevalence results from 2004 published later, showed an additional drop. Indeed, the seroprevalence observed in Côte d'Ivoire in 2004, 2005 and between 2012 and 2014 were 4% in the south ( 28 ), 8.8% in the center ( 29 ) and 4.6% in the north ( 10 ), respectively, without significant differences linked to the region. The risk factors of cattle infection in Côte d'Ivoire reported in the literature were: animal age, herd size, grazing with small ruminants and contact with pastoralist herds ( 10 , 42 ).…”

Section: Resultsmentioning

confidence: 97%

Factors Influencing the Transborder Transmission of Brucellosis in Cattle Between Côte d'Ivoire and Mali: Evidence From Literature and Current Key Stakeholders

et al. 2021

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Brucellosis is one of the main zoonoses affecting ruminants. Cattle and small ruminants are involved in transhumance and trade between Côte d'Ivoire and Mali. The endemic nature of the disease in both countries, connected through transhumance, poses unique challenges and requires more information to facilitate disease surveillance and the development of integrated control strategies. This study aimed to assess the main factors influencing the historical and current transborder transmission of brucellosis between Côte d'Ivoire and Mali. A literature review was conducted and data collection was performed through a participatory, transdisciplinary process by holding focus group discussions and interviews with key stakeholders. Cattle breeders, herdsmen, professionals of animal and human health, border control agents and experts took part. The data was analyzed to generate essential new knowledge for transborder brucellosis transmission factors and control strategies. From the literature, the seroprevalence of brucellosis in both countries varied from 11% (1987) to 20% (2013) and 15% (1972–1973) to 5% (2012–2014) in Mali and Côte d'Ivoire, respectively. The reduction of seroprevalence in Côte d'Ivoire was the result of the annual vaccination campaigns which lowered it from 28% (1978) to 14% (1984) after an increase due to livestock policy implemented in 1976. The meta-analysis and interviews jointly showed that the cross-border mobility was associated with the livestock development policy in Côte d'Ivoire as well as the ECOWAS act on the free movement of people and goods. This act supported the seasonal transhumance of livestock for access to pasture land in southern humid zones in Côte d'Ivoire. The seasonal mobility for grazing and trade was the main risk factor for the spread of brucellosis between pastoral zones of both countries. The existing legal health framework and border control mechanism do not achieve transborder surveillance to control brucellosis. Existing sanitary regulations should be adapted at regional scale to integrate a joint surveillance of high priority zoonotic diseases like brucellosis at border controls.

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“…Une classification à quatre niveaux (absent, faible, moyen et élevé) a été considérée selon la séroprévalence. A l'échelle du troupeau, les valeurs définies pour chaque niveau ont été respectivement [0 ; 10 %], ]10 ; 20 %], ]20 ; 30 %] et ≥ 30 %.La séroprévalence de la brucellose au sein de la population bovine était stable et similaire à celle relevée au sud (4 % ;Thys et al, 2005) et au nord (4,6 % ;Kanouté et al, 2017) de la Côte d'Ivoire. Cela traduit l'endémicité de la brucellose au sein du gros bétail dans le pays.…”

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Transhumance transfrontalière du bétail et répartition spatiale de la brucellose en Côte d’Ivoire

Oyetola

Diéne

MBARI

et al. 2022

Rev. Elev. Med. Vet. Pays Trop.

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La Côte d’Ivoire est un pays ouvert à la transhumance transfrontalière du fait de son climat et du potentiel de son marché dans l’espace ouest-africain. Le partage d’espaces, les contacts et les activités socioéconomiques induisent l’émergence et la transmission de plusieurs maladies infectieuses dont la brucellose. L’objectif de cette étude a été d’explorer la répartition spatiale de la brucellose induite par la transhumance en Côte d’Ivoire. Des analyses sérologiques ont été effectuées sur 885 bovins, 83 ovins, 14 caprins et 63 bouviers dans sept régions, dont cinq recevant le bétail transhumant et deux n’en recevant pas. Les séroprévalences individuelles ont été de 4,86 % (intervalle de confiance [IC] 95 % : 3,18‒6,53) chez les bovins, 4,82 % (IC95 % : 0‒10,27) chez les ovins et 7,14 % (IC95 % : 0‒23,11) chez les caprins ; aucun cas n’a été relevé chez les bouviers. La transhumance en provenance des pays limitrophes n’a pas augmenté la séroprévalence de la maladie dans les élevages sédentaires. Les bovins de la zone de transhumance étaient moins infectés (4,1 %) que ceux de la zone où ce type de mobilité n’était pas pratiqué (7,8 %). Les taux de séroprévalence élevés du bétail sédentaire en zone hors transhumance suggèrent d’intensifier le contrôle de la brucellose au niveau des élevages sédentaires.

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Etude de la prévalence de la brucellose bovine en zone forestière de la Côte d’Ivoire

Cited by 7 publications

References 4 publications

Seroprevalence and Potential Risk Factors for Brucella Spp. Infection in Traditional Cattle, Sheep and Goats Reared in Urban, Periurban and Rural Areas of Niger

Seroprevalence and Potential Risk Factors for Brucella Spp. Infection in Traditional Cattle, Sheep and Goats Reared in Urban, Periurban and Rural Areas of Niger

Factors Influencing the Transborder Transmission of Brucellosis in Cattle Between Côte d'Ivoire and Mali: Evidence From Literature and Current Key Stakeholders

Transhumance transfrontalière du bétail et répartition spatiale de la brucellose en Côte d’Ivoire

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