Prevalence and Factors Associated with Cattle Brucellosis in Animal Herds of the Namibe Province in Angola

Mufinda, Franco Cazembe; Boinas, Fernando; Nunes, Carla

doi:10.5455/ajvs.188809

Cited by 14 publications

(17 citation statements)

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“…Our herd seroprevalence is comparatively lower than the 25.6, 29.2, 32, 40.1 and 45.9% reported in Ethiopia, Tanzania, Cameroon, Nigeria and Angola, respectively [13,14,16,17,21]. In comparison to findings from studies in other countries in Southern Africa, our individual animal-and herd-level seroprevalences are comparatively lower than the 9.9 and 30.1% reported in Zimbabwe [35].…”

Section: Discussioncontrasting

confidence: 80%

“…In Zimbabwe, despite the implementation of a brucellosis vaccination program, the disease prevalence varies across provinces, with the latest report indicating a 30.1% herd seroprevalence [ 18 ]. In Angola, a 40.1% seroprevalence was reported in cattle herds [ 21 ], while in Malawi, a seroprevalence of 7.7% was reported in dairy cattle in the northern region that borders the Eastern Province of Zambia [ 22 ].…”

Section: Introductionmentioning

confidence: 99%

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Seroprevalence of Bovine Brucellosis in Selected Districts of Zambia

Mfune

Mubanga

Silwamba

et al. 2021

IJERPH

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Brucellosis is an infectious zoonosis that has huge economic and public health implications globally. The disease is prevalent in humans, livestock and wildlife in Sub-Saharan Africa. A cross-sectional study was conducted between 6 May 2017 and 31 July 2020 during which 1712 sera from 175 cattle herds in five districts from Southern, Western and Eastern Provinces of Zambia were collected and screened against brucellosis. The Rose Bengal Test (RBT) and competitive Enzyme-linked Immuno Assay (c-ELISA) were used in serial testing for the detection of antibodies against Brucella species. A total of 127 animals from 37 herds tested positive, giving overall individual animal and herd-level seroprevalences of 7.53% (95% CI: 6.28–8.78%) and 21.14% (95% CI: 15.0–27.2%), respectively. Namwala district had the highest herd seroprevalence (33.9%, 95% CI: 21.6–46.1%), while Lundazi did not record any seropositivity. Comparably, Southern Province had the highest individual animal (8.97%, 95% CI: 7–11%) and herd-level (28.5%, 95% CI: 20.3–36.7%) seroprevalences, although this was not statistically significant. Within Southern Province, higher seropositivity was observed in Namwala district (OR: 8.55; CI: 2.66–27.44), among female animals (OR: 2.48; CI: 1.38–4.46) and in those aged 11 years and above (OR: 2.67; CI: 1.34–5.34) as well as in gravid cows (OR: 4.34; CI: 2.08–8.92). Seropositivity was also observed among some animals with hygromas (OR: 6.5; CI: 0.45–94.08) and those with a history of abortion (OR: 1.13; CI: 0.18–7.28) although the findings were not statistically significant. Brucella seroprevalence among traditional cattle in Zambia remains high. Control programs against bovine brucellosis must be introduced to reduce its impact on human health and animal production.

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Section: Discussioncontrasting

confidence: 80%

Section: Introductionmentioning

confidence: 99%

Seroprevalence of Bovine Brucellosis in Selected Districts of Zambia

Mfune

Mubanga

Silwamba

et al. 2021

IJERPH

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“…Some risk factors associated with brucellosis in cattle in Angola included shortage of facilities for isolation of infected animals (OR: 6.66; 95% CI: 1.16-38.34), purpose of production different from meat (OR: 3.13; 95% CI: 1.07-9.19), abortions (OR: 3.98; 95% CI: 1.92-8.28), female infertility, and neonatal mortality (OR: 3.07; 95% CI: 1.42-6.65) [37].…”

Section: Africamentioning

confidence: 99%

Prevalence and risk factors of brucellosis in man and domestic animals: A review

Bamaiyi

2016

Int J One Health

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Brucellosis is the most common worldwide zoonosis with 500,000 new cases every year in humans and infections in millions of animals. This infection is mainly acquired by humans through consumption of unpasteurized milk and milk products from infected animals. Exposure can also occur occupationally in those who work closely with animals through contact with aborted fetuses and reproductive secretions. Animals acquire the infection from other infected animals through direct contact and vertical transmission. This infection is prevalent in all continents of the world except Antarctica, but its impact is more felt in developing countries where it is endemic in animals and humans. In certain developed countries where the disease was eradicated, there seem to be a re-emergence of the disease as the disease appears to claim more territory. The risk factors of the disease may vary from country to country and region to region, but most risk factors are similar. Consumption of unpasteurized milk and milk products plays a very important role in the transmission of this infection from animals to humans, in addition to direct contact with infected animals and their secretions. The best way to control this ubiquitous infection is through the One Health approach which involves human health, animal health, and environmental health. This paper reviews the prevalence of brucellosis in some countries in various continents of the world and highlights the risk factors responsible for the persistence of this infection in animals and humans with a view to proffering solution to this age-old zoonosis that has defied eradication for many generations in many parts of the world.

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“…In this study, anti‐ Brucella antibodies were detected in significantly higher proportions in farms with a history of reproductive disorders such as abortion and placenta retention, compared to farms with no history of reproductive disorders. Several other studies have also associated reproductive disorders to cattle brucellosis at animal and herd levels (Alhaji et al., 2016; Boukary et al., 2013; Hossain et al., 2014; Makita et al., 2011; Mufinda et al., 2015; Tasiame et al., 2016), and cows infected with Brucella have been reported to be three to four times more likely to abort than uninfected and unexposed cows (Boukary et al., 2013; Muma et al., 2007; Schelling et al., 2003). Reproductive disorders such as abortion are also known symptoms and the most frequent clinical signs of brucellosis in animals including cattle (Acha & Szyfres, 2001; McDermott et al., 2013; Schmutz et al., 1996).…”

Section: Discussionmentioning

confidence: 97%

Sero‐prevalence and risk factors of Brucella presence in farm bulk milk from open and zero grazing cattle production systems in Rwanda

Djangwani

Abong

Njue

et al. 2021

Veterinary Medicine & Sci

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Background Animal and human brucelloses have been reported in Rwanda, human brucellosis being linked to drinking inadequately heat‐treated milk. However, information on Brucella detection and prevalence in milk produced in Rwanda is limited. Objectives To determine the sero‐prevalence and risk factors of Brucella in farm bulk milk from zero and open grazing cattle production systems in Rwanda. Methods A total of 330 farm bulk milk samples were collected from 198 zero grazing farms and 132 open grazing farms in a cross‐sectional study in Rwanda. Sero‐prevalence of Brucella in milk was analysed using indirect enzyme‐linked immunosorbent assay. A questionnaire was administered to farmers to determine the risk factors of milk contamination with Brucella. Results Anti‐Brucella antibodies were prevalent in 19.7% (95% confidence interval (CI), 15.5–24.4) of the 330 collected farm bulk milk. Sero‐prevalence was significantly higher (p < 0.05) in open grazing farms (37.9% [50/132]) than in zero grazing farms (7.6% [15/198]). Practising open grazing system (odds ratio, OR = 69.5; 95% CI = 1.6–3033.6), history of abortion (OR = 19.5; 95% CI = 8.1–46.8) and placenta retention (OR = 4.2; 95% CI = 1.7–10.3) were the significant risk factors for the presence of anti‐Brucella antibodies in milk. Conclusion Notably, more than a third of farm bulk milk from open grazing farms in Rwanda contains Brucella antibodies. Considering the zoonotic nature of Brucella, there is a need to reinforce brucellosis control programs in the country.

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Prevalence and Factors Associated with Cattle Brucellosis in Animal Herds of the Namibe Province in Angola

Cited by 14 publications

References 0 publications

Seroprevalence of Bovine Brucellosis in Selected Districts of Zambia

Seroprevalence of Bovine Brucellosis in Selected Districts of Zambia

Prevalence and risk factors of brucellosis in man and domestic animals: A review

Sero‐prevalence and risk factors of Brucella presence in farm bulk milk from open and zero grazing cattle production systems in Rwanda

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