Análise Epidemiológica Das Condenações De Bovinos Por Tuberculose Em Abatedouros Do Estado De São Paulo

Grisi-Filho, José Henrique Hildebrand; Rosales, César; Ferreira, Fernando; Amaku, Marcos; Dias, Ricardo Augusto; Neto, José Soares Ferreira

doi:10.1590/1808-1657v78p1752011

Cited by 8 publications

(2 citation statements)

References 5 publications

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“…One study reported the confirmation of Mycobacterium bovis infection in 28 out of 1233 TLL, but no information on how many of the 1233 samples were actually subjected to bacteriological analyses was reported [ 62 ]. Another work reported 253 laboratory confirmations out of 587 TLL collected in slaughterhouses in another state of Brazil from 2002 to 2004 [ 63 ]. Therefore, the results obtained from the description of these findings in slaughterhouses should be interpreted with caution.…”

Section: Discussionmentioning

confidence: 99%

Use of Network Analysis and Spread Models to Target Control Actions for Bovine Tuberculosis in a State from Brazil

Cárdenas

Pozo

Lopes³

et al. 2021

Microorganisms

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Livestock movements create complex dynamic interactions among premises that can be represented, interpreted, and used for epidemiological purposes. These movements are a very important part of the production chain but may also contribute to the spread of infectious diseases through the transfer of infected animals over large distances. Social network analysis (SNA) can be used to characterize cattle trade patterns and to identify highly connected premises that may act as hubs in the movement network, which could be subjected to targeted control measures in order to reduce the transmission of communicable diseases such as bovine tuberculosis (TB). Here, we analyzed data on cattle movement and slaughterhouse surveillance for detection of TB-like lesions (TLL) over the 2016–2018 period in the state of Rio Grande do Sul (RS) in Brazil with the following aims: (i) to characterize cattle trade describing the static full, yearly, and monthly snapshots of the network contact trade, (ii) to identify clusters in the space and contact networks of premises from which animals with TLL originated, and (iii) to evaluate the potential of targeted control actions to decrease TB spread in the cattle population of RS using a stochastic metapopulation disease transmission model that simulated within-farm and between-farm disease spread. We found heterogeneous densities of premises and animals in the study area. The analysis of the contact network revealed a highly connected (~94%) trade network, with strong temporal trends, especially for May and November. The TLL cases were significantly clustered in space and in the contact network, suggesting the potential for both local (e.g., fence-to-fence) and movement-mediated TB transmission. According to the disease spread model, removing the top 7% connected farms based on degree and betweenness could reduce the total number of infected farms over three years by >50%. In conclusion, the characterization of the cattle network suggests that highly connected farms may play a role in TB dissemination, although being close to infected farms was also identified as a risk factor for having animals with TLL. Surveillance and control actions based on degree and betweenness could be useful to break the transmission cycle between premises in RS.

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Section: Discussionmentioning

confidence: 99%

Use of Network Analysis and Spread Models to Target Control Actions for Bovine Tuberculosis in a State from Brazil

Cárdenas

Pozo

Lopes³

et al. 2021

Microorganisms

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“…180 casos de tuberculose entre 2006 e 2016. No estudo ele a frequência média de tuberculose era de 0,48%, algo muito maior do que o levantado pelo atual estudo.Isso pode ser devido a exacerbante diferença numérica de cabeças de gados estudadas.GrisiFilho et al (2011) seguem a mesma linha de análise do presente trabalho. Em seu estudo foram analisados 79 abatedouros bovinos durante um período de 21 meses, entre os anos de 2002 e 2004, no qual obtiveram 43,10% das amostras colheitadas com a presença do Mycobacterium bovis.…”

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Prevalência da tuberculose bovina em animais abatidos em frigoríficos que possuem Serviço de Inspeção Federal (SIF) no estado de Rondônia, Brasil

Lopes

Souza

Maifredi

et al. 2021

RSD

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Uma doença preocupante tanto para os animais quanto para o homem, a tuberculose está amplamente difundida nos rebanhos bovinos ao redor de todo o país, gerando grandes prejuízos econômicos para os produtores e riscos sanitários para o ser humano. Apresentar a prevalência da tuberculose bovina em animais abatidos em frigoríficos rondonienses possuintes do Serviço de Inspeção Federal (SIF) foi o objetivo do presente trabalho. Demonstrando de modo retrospectivo as taxas de prevalência da tuberculose em bovinos abatidos em Rondônia nos anos de 2011 à 2017 e, por final, estipular uma média geral da prevalência da patologia no rebanho abatido no estado através dos anos aqui ponderados. Para a realização das análises estatísticas todos os dados citados foram fornecidos pela Agência de Defesa Sanitária Agrosilvopastoril do Estado de Rondônia (IDARON), no mês outubro de 2018. Foi disponibilizado: quantidade de animais abatidos em frigoríficos possuidores do SIF, animais positivos para tuberculose e população total de bovinos em Rondônia, sendo todas as informações do período de 2011 à 2017. Tais informações foram compiladas, calculadas e organizadas em tabelas. Para se chegar ao resultado da prevalência, o cálculo utilizado foi o de divisão () da quantidade total de animais abatidos pelos animais positivos confirmados por testes laboratoriais. Assim, a prevalência da tuberculose bovina nestes frigoríficos, em porcentagem (%), foi de: 0,00085 / 2011; 0,00033 / 2012; 0,00101 / 2013; 0,00141 / 2014; 0,00103 / 2015; 0,00114 / 2016; 0,00059 / 2017. Podendo-se afirmar que a prevalência da tuberculose em frigoríficos rondonienses que possuem o SIF se encontra demasiadamente baixa.

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Apparent prevalence and risk factors for bovine tuberculosis in the state of Paraná, Brazil: an assessment after 18 years since the beginning of the Brazilian program

Rodrigues

Amorim²,

Ferreira

et al. 2022

Trop Anim Health Prod

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Bovine tuberculosis (bTB) impacts considerably animal production and one health worldwide. To describe the prevalence, risk factors, and spatial pattern of the disease in the state of Paraná, Brazil, a cross-sectional study was conducted from September 2018 to February 2019. The area was divided into seven regions. Within each region, farms were randomly selected, and a predetermined number of cows was selected and tested by a comparative cervical tuberculin test. 17,210 animals were tested across 1757 farms. Herd prevalence of bTB-infected herds in Paraná was 2.5% [1.87–3.00%]. It has varied from 0.8 to 3.98% among seven regions, with clustering being detected in the west, central, and northeast areas. Animal prevalence was 0.35% [0.21–0.59%] and has varied from 0.08 to 0.6% among the pre-set regions. No major shifts in the prevalence of bTB were detected since 2007. Large-sized herds, dairy production, and feeding with whey were detected to be correlated with the presence of bTB. Exclusively among dairy herds, veterinary assistance from cooperatives, possession of self-owned equipment to cool milk, and feeding with whey were correlated with the disease. Considering these results, it is recommended that the state of Paraná seek to implement a surveillance system for the detection of bTB-infected herds transforming them into free ones, if possible, incorporating elements of risk-based surveillance. Health education is also recommended to inform farmers about the risks of introducing animals without testing and of feeding raw whey to calves.

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Análise Epidemiológica Das Condenações De Bovinos Por Tuberculose Em Abatedouros Do Estado De São Paulo

Cited by 8 publications

References 5 publications

Use of Network Analysis and Spread Models to Target Control Actions for Bovine Tuberculosis in a State from Brazil

Use of Network Analysis and Spread Models to Target Control Actions for Bovine Tuberculosis in a State from Brazil

Prevalência da tuberculose bovina em animais abatidos em frigoríficos que possuem Serviço de Inspeção Federal (SIF) no estado de Rondônia, Brasil

Apparent prevalence and risk factors for bovine tuberculosis in the state of Paraná, Brazil: an assessment after 18 years since the beginning of the Brazilian program

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