Occurrence and risk factors of brucellosis among domestic animals: an artificial neural network approach

Zare-Bidaki, Majid; Allahyari, Elaheh; Zeinali, Tayebeh; Asgharzadeh, M

doi:10.1007/s11250-022-03076-z

Cited by 11 publications

(15 citation statements)

References 48 publications

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“…Furthermore, the researchers confirmed a strong correlation between brucellosis and the incidence of abortion in animals such as sheep and goats [1]. An outbreak of abortion can lead to more incidence of Brucella-infection in animals and also farmers [10]. A relationship between abortion and prevalence rate of brucellosis was reported in different investigations [1].…”

Section: Discussionmentioning

confidence: 64%

“…In a serology work from southern Iran [25], 3.36% of cattle and 3.27% of small ruminants (sheep and goats) were positive for brucellosis; this rate was 27% in sheep and goats at herd-level. In ZareBidaki et al [10] study from Eastern Iran, 23% (23/100) of livestock were positive using SAT and 2-ME methods. According to Sharifi et al [26], 2.7% of goats and 3.5% of sheep were positive for brucellosis in southeastern Iran.…”

Section: Discussionmentioning

confidence: 91%

“…The chance of infection increases parallel to the age of animals; therefore, some researchers reported high infection in adult animals [41]. The age of animals was also reported as a significant risk option in the other works [10].…”

Section: Discussionmentioning

confidence: 99%

“…In Gharekhani et al [15] study from Hamedan, all of the milk samples from dairy farm tested were negative for Brucella-infection using molecular methods. Unlike this, wild and vaccinated of Brucella strains were isolated in milk samples of dairy farms in different regions of Iran [10]. However, vaccination against brucellosis must be the main goal in endemic regions because contact with livestock is a strong risk factor for human brucellosis [1,22].…”

Section: Discussionmentioning

confidence: 99%

“…Brucellosis is an endemic zoonotic disease in many parts of Iran [10]. In Iran, the seven-year incidence rate of brucellosis (2011-2018) was 21.78% (95% confidence interval [CI]: 21.66-21.91%) [11].…”

Section: Introductionmentioning

confidence: 99%

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Brucellosis in livestock: First study on seroepidemiology, risk factors, and preventive strategies to manage the disease in Famenin, Iran

et al. 2022

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Background and Aim: Brucellosis is an infectious disease in humans and livestock. The disease is endemic in many regions of Iran, for example, Hamedan Province. Knowledge of infection rate and associated risk factors is essential to control and prevent the disease. The study aimed to estimate the prevalence of brucellosis and associated risk factors in cattle, sheep, and goats in Famenin, Hamedan Province, West of Iran. Materials and Methods: Blood samples of 1758 animals (1470 sheep, 190 goats, and 98 cattle) were obtained in different rural regions of Famenin. The samples were evaluated to detect of Brucella-antibodies using rose Bengal plate test (RBPT), Wright standard tube agglutination test (SAT), and 2-Mercapto-Ethanol (2-ME) techniques. The risk factors associated with brucellosis such as age, gender, history of vaccination against brucellosis, and abortion history in animals were evaluated. In the sampling process, the critical gaps related to the distribution of brucellosis in the herds and regions are identified for designing the strategies to prevent and control the disease. Results: About 6.88% and 89.31% of animals had a history of abortion and vaccination against brucellosis, respectively. Most of the animals were female (92.49%) and in the range of 2–3 age old (39.8%). The antibodies to the Brucella-infection in animals were 2.73% with RBPT and 1.30% with SAT and 2-ME. The prevalence of brucellosis was detected 1.3% among individual animals and 11% among herds. This rate was 1.43% for sheep and 1.05% for goats, with no significant statistical difference. No seropositive case was detected in cattle samples using RBPT, STAT, and 2-ME. The highest rate of brucellosis (6.25%) was detected in Emamzadeh-Pirnahan region (22.2% goats and 5.6% sheep). In sheep, most cases of the disease were in 3–4 age-old group (1.92%), animals without a history of abortion (1.58%), and without a history of vaccination against brucellosis (2.80%). Furthermore, 5.94% of males and 1.11% of females were detected positive for brucellosis (p < 0.001). The chance of brucellosis in rams was 5.6 folds higher than in others (odds ratio = 5.64). Brucellosis in goats was detected 2.94% and 1.89% in the age groups <1 and 2–3 year-old. Furthermore, 1.22% of females and 1.34% of animals without a history of abortion were positive. Brucellosis was found in 0.61% of vaccinated and 3.85% of non-vaccinated goats. Except for gender in sheep, no significant statistical correlation (p > 0.05) was observed between prevalence of brucellosis and risk factors. In farmers, low level of information about the transmission and also control and preventive methods of the disease was dominant. Consumption of traditional and unpasteurized dairy products is also very common in the studied regions. Conclusion: This is a comprehensive evaluation of animal brucellosis parallel to humans' cohort study in the Famenin region for the first time. Although the rate of brucellosis in animals is low in the region, explaining the risk factors to farmers, mass vaccination, regular screening of animals, and culling the positive animals are very important for controlling and reducing the disease in the region.

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Section: Discussionmentioning

confidence: 64%

Section: Discussionmentioning

confidence: 91%

Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Brucellosis in livestock: First study on seroepidemiology, risk factors, and preventive strategies to manage the disease in Famenin, Iran

et al. 2022

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Sero‐prevalence and risk factors associated with brucellosis in dairy cattle of Sylhet District, Bangladesh: A cross‐sectional study

Nath

Ahmed

Malakar

et al. 2023

Veterinary Medicine & Sci

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Background:Brucellosis is an emerging disease that causes a significant impact on productive and reproductive performance in dairy cattle. Though Brucella is a pivotal microorganism for dairy cattle, the scenario of brucellosis in Sylhet District is unknown. Objectives:A cross-sectional study was carried out to assess the prevalence and determinants associated with brucellosis in dairy cattle of Sylhet District.Methods: A total of 386 sera and data on determinants from 63 dairy herds were collected from 12 sub-districts using simple random sampling. The sera were tested with Rose Bengal Brucella antigen test, Brucella abortus plate agglutination test and serum agglutination test to find out the sero-positivity.Results: Overall, 17.09% (95% CI: 13.67-21.18) prevalence in cows were calculated.Relatively higher prevalence (56.08%; 95% CI: 42.23-70.32) was recorded in cows having parity ≥4 and were at higher risk (OR = 7.28) than the other cows with parity 0-3.

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Seroprevalence of brucellosis in livestock in Iran: a meta-analysis

Adabi,

Gharekhani,

Saadatmand

et al. 2023

Comp Clin Pathol

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Occurrence and risk factors of brucellosis among domestic animals: an artificial neural network approach

Cited by 11 publications

References 48 publications

Brucellosis in livestock: First study on seroepidemiology, risk factors, and preventive strategies to manage the disease in Famenin, Iran

Brucellosis in livestock: First study on seroepidemiology, risk factors, and preventive strategies to manage the disease in Famenin, Iran

Sero‐prevalence and risk factors associated with brucellosis in dairy cattle of Sylhet District, Bangladesh: A cross‐sectional study

Seroprevalence of brucellosis in livestock in Iran: a meta-analysis

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