Recurrence of bovine tuberculosis breakdowns in Great Britain: Risk factors and prediction

Karolemeas, Katerina; McKinley, Trevelyan J.; Clifton-Hadley, R. S.; Goodchild, A. V.; Mitchell, A.; Johnston, W. Thomas; Conlan, Andrew J. K.; Donnelly, Christl A.; Wood, James

doi:10.1016/j.prevetmed.2011.06.004

Cited by 85 publications

(85 citation statements)

References 13 publications

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“…Dairy herds were also found to have a higher risk of tuberculosis in New Zealand (PORPHYRE et al, 2008) and the United Kingdom (RAMÍREZ-VILLAESCUSA et al, 2010;KAROLEMEAS et al, 2011). In Brazil, this association was previously detected in the states of Bahia, Goiás, Mato Grosso, Minas Gerais, Paraná, Rio Grande do Sul, Santa Catarina, and São Paulo (BAHIENSE et al, 2016;ROCHA et al, 2016;NÉSPOLI et al, 2016;BARBIERI et al, 2016;SILVA et al, 2016;QUEIROZ et al, 2016;BAUMGARTEN et al, 2016;DIAS et al, 2016).…”

Section: Discussionmentioning

confidence: 68%

Prevalence and risk factors for bovine tuberculosis in the State of Mato Grosso do Sul, Brazil

Guedes

Bottene

Monteiro

et al. 2016

SCA

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The objective of this study was to describe the epidemiological situation of bovine tuberculosis in Mato Grosso do Sul. The State was divided into three regions, Pantanal, Planalto Norte, and Planalto Sul. In each region, properties were randomly chosen and a pre-established number of animals were also randomly selected; these animals were submitted to the intradermal comparative cervical tuberculin diagnostic test. In total, 17,121 animals from 938 properties were tested. In cases of inconclusive results, the animals were retested with the same diagnostic procedure within a minimum interval of 60 days. An epidemiological questionnaire was administered in the properties sampled to investigate possible risk factors for the disease. In the State, the prevalence of infected herds was 1.3% (95% confidence interval [CI]: 0.72-2.37%) and that of infected animals was 0.035% (95% CI: 0.017-0.069%). Point estimates indicated a higher concentration of infected herds (2.61%; 95% CI: 1.31-5.15%) and infected animals (0.132%; 95% CI: 0.055-0.315%) in the Planalto Sul region, which has a predominance of dairy properties. The prevalence of herds infected with bovine tuberculosis was found to be associated with the production of milk, with technification in the mode of production represented by the use of mechanical milking. Thus, it is recommended that the State adopt strategies for the eradication of bovine tuberculosis, with the structuring of the surveillance system for detection and mitigation of infected herds, incorporating risk-based surveillance elements. ResumoO objetivo do presente estudo foi descrever a situação epidemiológica da tuberculose bovina no Mato Grosso do Sul. O estado foi dividido em três regiões, Pantanal, Planalto Norte e Planalto Sul. Em cada região, propriedades foram sorteadas aleatoriamente e, dentro dessas, selecionou-se também de forma aleatória um número pré-estabelecido de animais, os quais foram submetidos ao teste Tuberculínico Cervical Comparativo. No total, foram testados 17.121 animais, provenientes de 938 propriedades. Os animais que resultaram inconclusivos foram retestados com o mesmo procedimento diagnóstico em intervalo mínimo de 60 dias. Nas propriedades amostradas foi aplicado um questionário epidemiológico para averiguar possíveis fatores de risco para a enfermidade. No estado, a prevalência de focos foi de 1,3% [0,72; 2,37%] e a de animais 0,035% [0,017; 0,069%]. As estimativas pontuais indicaram uma maior concentração de focos (2,61% [1,31; 5,15%]) e de animais (0,132% [0,055; 0,315%]) na região Planalto Sul, que tem predomínio de propriedades leiteiras. Verificou-se que a condição do foco de tuberculose bovina está associada à produção de leite, com sofisticação no modo de produção representado pela utilização de ordenha mecânica. Assim, recomenda-se que o estado adote estratégias de erradicação, com a estruturação de sistema de vigilância para detecção e saneamento de focos, incorporando elementos de vigilância baseada em risco. Palavras-chave: Brasil. Fatores de risco...

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Section: Discussionmentioning

confidence: 68%

Prevalence and risk factors for bovine tuberculosis in the State of Mato Grosso do Sul, Brazil

Guedes

Bottene

Monteiro

et al. 2016

SCA

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“…Dairy cattle were also found to feature a higher risk for tuberculosis in New Zealand (PORPHYRE et al, 2008), the United Kingdom (RAMÍREZ-VILLAESCUSA et al, 2010;KAROLEMEAS et al, 2011), andBrazil (GALVIS et al, 2016;DIAS et al, 2016;QUEIROZ et al, 2016;ROCHA et al, 2016;SILVA et al, 2016;VELOSO et al, 2016). In addition, animals from dairy herds tend to be older than animals from beef herds, therefore having a greater likelihood of exposure to the infectious agent (HUMBLET et al, 2009).…”

Section: Discussionmentioning

confidence: 99%

Prevalence and risk factors for bovine tuberculosis in the State of Bahia, Brazil

Dias

Ulloa-Stanojlovic

Belchior³

et al. 2016

SCA

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An epidemiological study was carried out in order to characterize the bovine tuberculosis situation and to support the planning and implementation of the National Program for the Control and Eradication of Bovine Tuberculosis in the State of Bahia, owing to the importance of the disease in causing economic burdens and its impact on public health. The State was divided into four regions. In each region, properties were randomly chosen and, a pre-established number of animals was also randomly selected; these animals then subjected to the intradermal comparative cervical tuberculin diagnostic test. Animals with inconclusive test results were retested with the same diagnostic procedure within a minimum interval of 60 days. Within each sampled property, a questionnaire was administered to verify possible risk factors for the disease. In the State, the prevalence of infected herds was 1.6% [1.0-2.6] and that of infected animals 0,21% [0,07; 0,60]. In the regions, the prevalence of infected herds and infected animals were, respectively, 2,0% [1,0; 4,2%] and 2,0% [1,0; 4,2%] In conclusion, it is recommended that the State of Bahia implement a surveillance system for the detection of herds with bovine tuberculosis to certifying them in free herds, with special attention to dairy properties, and develop a solid program of health education so that producers test animals for bovine tuberculosis before introducing them into their herds. para caracterizar a situação da enfermidade no estado. O Estado foi estratificado em quatro regiões. Em cada região, propriedades foram sorteadas aleatoriamente e, dentro dessas, escolheu-se de forma também aleatória um número pré-estabelecido de animais, os quais foram submetidos ao teste tuberculínico Cervical Comparativo. Os animais que resultaram inconclusivos foram retestados com o mesmo procedimento diagnóstico em intervalo mínimo de 60 dias. Em cada propriedade amostrada aplicou-se um questionário para se verificar possíveis fatores de risco para a doença. No Estado, a prevalência de focos foi de 1,6% [1,0; 2,6%] e a de animais 0,21% [0,07; 0,60]. Nas regiões, as prevalências de focos e de animais foram, respectivamente de 2,0% [1,0; 4,2%] e 0,08% [0,035; 0,17] (OR= 9,72), ser propriedade mista (OR= 6,66) e tamanho do rebanho ≥ 18 fêmeas ≥ 24 meses (OR= 8,44). Concluindo, recomenda-se que o Estado da Bahia implemente um sistema de vigilância para detecção e saneamento dos focos de tuberculose bovina, com especial atenção para as propriedades produtoras de leite, e que desenvolva uma sólida ação de educação sanitária para que seus produtores passem a testar os animais para tuberculose bovina antes de introduzi-los em seus plantéis. Palavras-chave: Tuberculose bovina. Prevalência. Fatores de risco. Bahia. Brasil.

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“…Dairy herds also presented higher risk for tuberculosis in New Zealand (PORPHYRE et al, 2008), United Kingdom (KAROLEMEAS et al, 2011;RAMÍREZ-VILLAESCUSA et al, 2010), andBrazil (BAHIENSE et al, 2016;BARBIERI et al, 2016;DIAS et al, 2016;GALVIS et al, 2016;ROCHA et al, 2016;SILVA et al, 2016;VELOSO et al, 2016). In addition, animals from dairy herds tend to be older than animals from beef herds, having a higher probability of being exposed to the infectious agent (HUMBLET et al, 2009).…”

Section: Discussionmentioning

confidence: 99%

Epidemiological status of bovine tuberculosis in the State of Rio Grande do Sul, Brazil

Queiroz

Groff

Silva

et al. 2016

SCA

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A study was conducted to determine the epidemiological status of bovine tuberculosis in the state of Rio Grande do Sul. The state was divided in seven regions, and in each of them, a pre-established number of farms was randomly sampled. In each farm, cows with age equal to or greater than 24 months were selected at random and submitted to the comparative cervical tuberculin test. The animals whose tests were inconclusive were retested with the same diagnostic procedure within a minimum interval of 60 days. In all, 9,895 animals from 1,067 farms were tested. An epidemiological questionnaire was applied in the farms in order to identify risk factors associated with bovine tuberculosis. The prevalence of infected herds in the state was 2.8% [1.8; 4.0] and that of infected animals was 0.7% [0.4; 1.0]. There was a trend towards a concentration of infected herds in the northern part of the state, with a predominance of dairy and mixed herds. The risk factors associated with the condition of infected herds were being a dairy herd (OR = 2.90 [1.40; 6.13]) and herds with 16 or more cows (OR = 2.61 [1.20; 5.49]). Thus, the best strategy to be adopted by the state is the implementation of surveillance systems to detect and remediate the infected herds, preferably incorporating elements of risk-based surveillance. In addition, the state must carry out a solid action of health education so that the producers test animals for bovine tuberculosis before introducing them in their herds. Key words: Bovine tuberculosis. Brazil. Mycobacterium bovis. Prevalence. Rio Grande do Sul. Risk factors. ResumoUm estudo foi realizado para determinar a situação epidemiológica da tuberculose bovina no Estado de Rio Grande do Sul. O Estado foi dividido em sete regiões e em cada uma delas foi aleatoriamente amostrado um número pré-estabelecido de propriedades. Dentro de cada propriedade, fêmeas com idade igual ou superior a 24 meses foram escolhidas aleatoriamente e submetidas ao teste tuberculínico 20; 5.49]). Assim, a melhor estratégia a ser adotada pelo estado é a implementação de sistema de vigilância para detecção e saneamento dos focos, de preferência incorporando elementos de vigilância baseada em risco. Além disso, o estado deve realizar uma sólida ação de educação sanitária para que seus produtores passem a testar os animais para tuberculose bovina antes de introduzi-los em seus plantéis. Palavras-chave: Brasil. Fatores de risco. Mycobacterium bovis. Prevalência. Rio Grande do Sul. Tuberculose bovina.

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Recurrence of bovine tuberculosis breakdowns in Great Britain: Risk factors and prediction

Cited by 85 publications

References 13 publications

Prevalence and risk factors for bovine tuberculosis in the State of Mato Grosso do Sul, Brazil

Prevalence and risk factors for bovine tuberculosis in the State of Mato Grosso do Sul, Brazil

Prevalence and risk factors for bovine tuberculosis in the State of Bahia, Brazil

Epidemiological status of bovine tuberculosis in the State of Rio Grande do Sul, Brazil

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