Risk factors for Brucella spp. infection in dairy cattle farms in Asmara, State of Eritrea

Omer, Mazin; Skjerve, Eystein; Woldehiwet, Z.; Holstad, Gudmund

doi:10.1016/s0167-5877(00)00152-5

Cited by 75 publications

(69 citation statements)

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“…The observed relationships between Brucella status and sex and age is consistent with what is generally known about the biology of the infection (Kadohira et al, 1997;Kubuafor et al, 2000;Omer et al, 2000b). However, the relationship between Brucella status and sex has been observed to vary with different subpopulations (Kadohira et al, 1997;Turkson and Boadu, 1992;Kubuafor et al, 2000;Omer et al, 2000a). Similarly, the observed relationship between Brucella seropositivity and history of abortion is consistent with what has generally been observed (Kubuafor et al, 2000;England et al, 2004).…”

Section: Discussionsupporting

confidence: 86%

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Prevalence of antibodies to Brucella spp. and individual risk Factors of Infection in Traditional Cattle, Goats and Sheep Reared in Livestock–Wildlife Interface Areas of Zambia

Muma

Samui

Siamudaala

et al. 2006

Trop Anim Health Prod

114

102

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Please cite the article as: Muma, J.B., Samui, K.L., Siamudaala, V.M., Oloya, J., Matope, G., Omer, M.K., Munyeme, M., Mubita, C., Skjerve, E., 2006. Prevalence of antibodies to Brucella spp. and individual risk factors of infection in traditional cattle, goats and sheep reared in livestock-wildlife interface areas of Zambia. Tropical Animal Health and Production,. 2 AbstractA cross-sectional study was performed in the livestock-wildlife interface areas of Lochinvar and Blue Lagoon National Parks and the non-interface area of Kazungula to determine the prevalence of antibodies to Brucella spp. in domestic ruminants and identify individual animal risk factors of infection. Atotal of 1245 cattle from 124 herds and 280 goats and sheep from 29 flocks were tested sequentially for Brucella antibodies using the Rose Bengal test (RBT) and competitive ELISA. In cattle, individual seroprevalence ranged from 14.1% to 28.1%, while herd sero-prevalence ranged from 46.2% to 74.0% in the three study areas. No goat or sheep tested positive for Brucella antibodies. Three types of cattle grazing strategies were encountered: locally grazed herds (LGH), transhumantly grazed herds (TGH) and river flood plain grazed herds (FGH). Brucella seroprevalence was seen to vary according to area and grazing strategy: Lochinvar and transhumant grazed herds recorded the highest figures, respectively. Age, sex and history of abortion were found to have independent effects on individual seroprevalence. This study establishes that brucellosis is endemic in domestic animals in the livestock-wildlife interface areas of Blue Lagoon and Lochinvar national parks and the disease is also present in Kazungula. We observed that type of grazing strategy had significant impact on cattle Brucella seroprevalence and that transhumant herds were at high risk of being infected.

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Section: Discussionsupporting

confidence: 86%

“…In addition, about 34% of milk from commercial farmers is sold as raw milk to the general public. Since consumption of raw, unpasteurized milk has been identified as one of the major risk factors in human brucellosis (Al-Shamahy et al, 2000;Omer et al, 2000a), many people in Zambia are likely to be at risk of Brucella infections.…”

Section: Introductionmentioning

confidence: 99%

Prevalence of antibodies to Brucella spp. and individual risk Factors of Infection in Traditional Cattle, Goats and Sheep Reared in Livestock–Wildlife Interface Areas of Zambia

Muma

Samui

Siamudaala

et al. 2006

Trop Anim Health Prod

114

102

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“…Although numerous authors have reported that brucellosis is more prevalent in milk than in meat herds (Omer et al 2000, Lithg-Pereira 2001, in this study a higher seroprevalence was found in meat animals. These results are difficult to explain and could be related with a better sanitary management of milk herds in the region because the milk is used to make traditional high quality cheese, which is made with certified milk.…”

Section: Resultscontrasting

confidence: 76%

“…These results are difficult to explain and could be related with a better sanitary management of milk herds in the region because the milk is used to make traditional high quality cheese, which is made with certified milk. Other explanation could be that, in meat herds, animals are more often introduced into the herd, and that practice increases the risk of introducing infected animals (Omer et al 2000).…”

Section: Resultsmentioning

confidence: 99%

“…The disease is responsible for considerable economical losses to the small ruminant industry (Benkirane 2006, OIE 2009. Sheep and goats brucellosis is endemic in most countries of the Mediterranean basin, the Middle East and Central Asia (Omer et al 2000, Al-Majali et al 2005, Latin America, and parts of Africa (Benkirane 2006). The first report of brucellosis in Portugal is from 1873.…”

Section: Introductionmentioning

confidence: 99%

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Seroprevalence of sheep and goat brucellosis in the northeast of Portugal

Coelho

Rodrigues

2013

Arch. med. vet.

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RESUMENSe realizó una encuesta para estimar la seroprevalencia de brucelosis ovina y caprina en la región de Trás-os-Montes e Alto Douro, al noreste de Portugal. En total fueron analizados 278.097 pequeños rumiantes distribuidos en 5.466 rebaños pertenecientes a 13 organizaciones de Ganaderos (OPP) fueron analizados. Cuatrocientos ochenta y siete (8,9%) rebaños tenían uno o más animales serológicamente positivos, con valores que oscilaban entre 8,2% y 9,7%. La prevalencia individual fue de 0,44% (IC 95% 0,40-0,48%). No se detectaron diferencias estadísticamente significativas asociadas al tamaño de los rebaños, las especies, la constitución del rebaño, el tipo de producción y la OPP. Basándose en los resultados de esta encuesta, un pequeño porcentaje de animales y un alto porcentaje de los rebaños en el noreste de Portugal fueron serológicamente positivos. Dada la escasez de estudios epidemiológicos sobre la brucelosis en el norte de Portugal, la información sobre la seroprevalencia obtenida en este estudio es importante a la hora de definir medidas de control de la brucelosis en la zona.Palabras clave: Brucella melitensis, pequeños rumiantes, epidemiología, seroprevalencia. SUMMARYA survey to estimate the seroprevalence of ovine and caprine brucellosis was conducted in the region of Trás-os-Montes e Alto Douro, Northeast of Portugal. In total, 278,097 small ruminants and 5,466 flocks from 13 Livestock Farmers Organizations (OPP's) were analysed. Four hundred and eighty seven (8.9%) flocks had one or more serologically positive animals with values ranging between 8.2% and 9.7%. The individual seroprevalence was 0.44% (CI 95% 0.40-0.48%). There were significant differences in seroprevalence rates among herd sizes, species, constitution of herd, production's type and OPP. Based on the results of this survey, a small percentage of animals and a high percentage of flocks in the Northeast of Portugal were serologically positive. Considering the paucity of epidemiological reports on brucellosis in the Northeast of Portugal the information on seroprevalence provided in this study is necessary to define control measures for brucellosis in the area.

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Seroprevalence of bovine brucellosis and associated factors among dairy cows with recent cases of abortion in Ethiopia

Getahun

Urge

Mamo

2023

Public Health Challenges

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BackgroundBrucellosis is a serious zoonotic disease affecting human and all domestic animals. It is considered to be one of the great public health problems all over the world. Little attention has been paid to bovine brucellosis in small holder dairy farm and in animal owners and farm workers in central highland of Ethiopia. This research was conducted with the aim of determining seropositivity and identifying the potential risk factors of brucellosis in dairy cows with recent cases of abortion in the central highlands of Ethiopia.MethodsThis was a cross‐sectional study with purposive sampling carried out on dairy cows in the farms and kebeles from December 2019 to May 2020. The serum samples were initially screened for brucellosis using the Rose Bengal plate test (RBPT) followed by the complement fixation test (CFT) for confirmation. The risk factors for bovine brucellosis were assessed using univariable Firth bias reduced logistic regression.ResultsA total of 352 samples were tested. Serological positivity for bovine brucellosis was detected in 1.2% (95% CI: 0.47–2.97) by RBPT, and bovine brucellosis confirmed by CFT was 0.6% (95% CI: 0.16–2.09). The risk factors for confirmed bovine brucellosis were the late stage of abortion (OR = 1.046, p = < 0.0041), retained fetal membranes (OR = 32.74, p = 0.006), and market‐based stock replacement (OR = 1.0638, p = 0.0008), which are significantly associated at 95% confidence interval.ConclusionThe proportion of brucellosis among aborted cows seems to be low in the study area. However, given the lack of control strategies in the area, there is a potential risk of transmission in dairy cattle and the human population in the study areas.

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Risk factors for Brucella spp. infection in dairy cattle farms in Asmara, State of Eritrea

Cited by 75 publications

References 3 publications

Prevalence of antibodies to Brucella spp. and individual risk Factors of Infection in Traditional Cattle, Goats and Sheep Reared in Livestock–Wildlife Interface Areas of Zambia

Prevalence of antibodies to Brucella spp. and individual risk Factors of Infection in Traditional Cattle, Goats and Sheep Reared in Livestock–Wildlife Interface Areas of Zambia

Seroprevalence of sheep and goat brucellosis in the northeast of Portugal

Seroprevalence of bovine brucellosis and associated factors among dairy cows with recent cases of abortion in Ethiopia

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