scholarly journals Epidemiological situation of bovine tuberculosis in the state of Tocantins, Brazil

2021 ◽  
Vol 42 (3Supl1) ◽  
pp. 1673-1684
Author(s):  
José Soares Ferreira Neto ◽  
◽  
Regina Gonçalves Barbosa ◽  
Fernando Ferreira ◽  
Marcos Amaku ◽  
...  
Keyword(s):  
Bovine Tuberculosis ◽  
Surveillance System ◽  
Diagnostic Procedure ◽  
Tuberculin Test ◽  
The State ◽  
Test Results ◽  
Low Prevalence ◽  
Positive Animal ◽  
Epidemiological Situation ◽  
Predetermined Number

The epidemiological situation of bovine tuberculosis was studied from October 2014 to August 2015 in the state of Tocantins, a traditional beef exporter. The state was divided into five regions and the farms were randomly selected in each region. A predetermined number of animals was randomly selected and diagnosed using the Comparative Cervical Tuberculin Test. A total of 11,926 animals from 757 farms were tested. Animals with inconclusive test results were retested with the same diagnostic procedure at least 60 days later. The prevalence of infected herds in the state was 0.16% [0.02-1.15] and the prevalence of infected animals 0.009% [0.001-0.063]. Only one positive animal was detected in the Araguaína region. The state of Tocantins has a very low prevalence of bovine tuberculosis and, therefore, should evaluate the need of structuring a surveillance system to eradicate the disease.

scholarly journals Epidemiological situation of bovine tuberculosis in the State of Pernambuco, Brazil

2016 ◽  
Vol 37 (5Supl2) ◽  
pp. 3601 ◽  
Author(s):  
Paula Regina Barros Lima ◽  
Dulcilene Lacerda do Nascimento ◽  
Erivânia Camelo de Almeida ◽  
Késia Alcântara Queiroz Pontual ◽  
Marcos Amaku ◽  
...  
Keyword(s):  
Risk Factors ◽  
Bovine Tuberculosis ◽  
Surveillance System ◽  
Tuberculin Test ◽  
The State ◽  
Dry Areas ◽  
Grazing Area ◽  
Epidemiological Situation ◽  
Predetermined Number

The epidemiological situation of bovine tuberculosis was studied in the state of Pernambuco, Brazil. The state was divided into three regions, and a predetermined number of properties was randomly sampled in each region. In each property, females aged 24 months or older were randomly selected and subjected to the cervical comparative tuberculin test. Altogether, 5,728 animals from 906 properties were tested. In the evaluated properties, an epidemiological questionnaire was applied to identify risk factors related to bovine tuberculosis. The prevalence of infected herds and infected animals and in the state was 2.87% [1.82–4.50] and 0.62% [0.29–1.29], respectively. There was a predominance trend of infected herds in the properties located in the dry areas of Pernambuco, where most dairy properties are found. The risk factors related to the occurrence of positive herds were: presence of 18 or more cows in the herd, milking the cows two or three times a day, and sharing the grazing area. In conclusion, the prevalence of bovine tuberculosis in Pernambuco is low, and the best strategy to be adopted is the implementation of a surveillance system for detection and sanitation of infected herds, preferably by incorporating risk-based surveillance strategies. In addition, the State should implement an effective sanitary program to enable producers to test their animals for bovine tuberculosis before inserting them into the herds, as well as avoid sharing the grazing areas with properties that are not free of bovine tuberculosis.

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

2016 ◽  
Vol 37 (5Supl2) ◽  
pp. 3579 ◽  
Author(s):  
Israel Barbosa Guedes ◽  
Ilda Francisca Neves Bottene ◽  
Letícia Almeida Retumba Carneiro Monteiro ◽  
Jamil Manoel Leal Filho ◽  
Marcos Bryan Heinemann ◽  
...  
Keyword(s):  
Risk Factors ◽  
Bovine Tuberculosis ◽  
Surveillance System ◽  
The State ◽  
Mato Grosso ◽  
Point Estimates ◽  
Minimum Interval ◽  
Mato Grosso Do Sul ◽  
Epidemiological Situation ◽  
Mode Of Production

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.

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

2016 ◽  
Vol 37 (5Supl2) ◽  
pp. 3549 ◽  
Author(s):  
Luciana Bahiense ◽  
Luciana Niedersberg de Ávila ◽  
Maria Emília Bavia ◽  
Marcos Amaku ◽  
Ricardo Augusto Dias ◽  
...  
Keyword(s):  
Risk Factors ◽  
Bovine Tuberculosis ◽  
Surveillance System ◽  
Dairy Farm ◽  
The State ◽  
Test Results ◽  
Property A ◽  
Factors Associated ◽  
Minimum Interval ◽  
Control And Eradication

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 region 1; , 2,9% [1,5; 5,5] and 0,66% [0,20; 2,16] in region 2; 0,3% [0,04; 2,1] and 0,02% [0,002; 0,12] in region 3; and 0,6% [0,2; 2,5] and 0,05% [0,01; 0,20] in region 4. The risk factors associated with tuberculosis infection were dairy farm (odds ratio [OR] = 9.72) or mixed farm (OR = 6.66), and size of herd ? 18 cows ? 24 months of age (OR = 8.44). 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.

scholarly journals Epidemiological situation of bovine tuberculosis in the State of Mato Grosso, Brazil

2016 ◽  
Vol 37 (5Supl2) ◽  
pp. 3589 ◽  
Author(s):  
João Marcelo Brandini Néspoli ◽  
Rísia Lopes Negreiros ◽  
Marcos Amaku ◽  
Ricardo Augusto Dias ◽  
Fernando Ferreira ◽  
...  
Keyword(s):  
Risk Factors ◽  
Bovine Tuberculosis ◽  
Diagnostic Procedure ◽  
Random Number ◽  
Herd Size ◽  
The State ◽  
Property A ◽  
Mato Grosso ◽  
Epidemiological Situation ◽  
Tuberculin Tests

In 2009, the epidemiological situation of bovine tuberculosis was studied in the state of Mato Grosso, which is a traditional beef exporter. The state was divided into four regions. In each region, properties were selected randomly. A predetermined random number of animals were chosen from these properties, and comparative cervical tuberculin tests were conducted. In total, 28,878 animals from 1,133 properties underwent examination. The animals with inconclusive results were reexamined with the same diagnostic procedure in a minimal interval of 60 days. In each sampled property, a questionnaire-based survey was conducted to identify possible risk factors for the disease. In the state, the prevalence of infected herds and animals was 1.3% [0.7; 2.4] and 0.12% [0.03; 0.44], respectively. Further, the prevalence of infected herds and animals were 0.0% [0.0; 2.0] and 0.0% [0.0; 0.08] in the Pantanal region, 1.3% [0.5; 3.1] and 0.04% [0.01; 0.17] in the dairy region, 0.7% [0.2; 2.7] and 0.01% [0.003; 0.04] in the fattening region, and 1.7% [0.7; 4.1] and 0.24% [0.06; 0.90] in the breeding region, respectively. It was observed that the condition of the herds infected with bovine tuberculosis was associated with milk production, European or mestizo breeds, degree of sophistication in the production mode, and herd size of up to 486 animals. Therefore, the implementation of a monitoring system for detection and elimination of the residual infected herds along with incorporation of risk-based monitoring elements is the best strategy for the state.

scholarly journals Comparison between tuberculin test results and ELISA for diagnosis of bovine tuberculosis

2007 ◽  
Vol 17 (1) ◽  
pp. 56-60
Author(s):  
F. R. El-Seedy ◽  
Sohair S. Elyas ◽  
W. H. Hassan ◽  
E. A. Nasr
Keyword(s):  
Bovine Tuberculosis ◽  
Tuberculin Test ◽  
Test Results

scholarly journals Epidemiologic characterization of bovine tuberculosis in the State of Espírito Santo, Brazil

2016 ◽  
Vol 37 (5Supl2) ◽  
pp. 3567 ◽  
Author(s):  
Jason Onell Ardila Galvis ◽  
José Henrique Hildebrand Grisi-Filho ◽  
Daniele Da Costa ◽  
Alba Luisa Pereira Ribeiro Said ◽  
Marcos Amaku ◽  
...  
Keyword(s):  
Bovine Tuberculosis ◽  
Tuberculin Test ◽  
Reproductive Activity ◽  
Cross Sectional Study ◽  
Fixed Number ◽  
The State ◽  
Cross Sectional ◽  
Espírito Santo ◽  
Apparent Prevalence ◽  
Espirito Santo

A cross-sectional study was carried out between January 2012 and May 2014 to investigate the status of bovine tuberculosis in the state of Espírito Santo. The state was divided into two regions, and in each of them, 300 farms with reproductive activity were randomly selected and considered as the primary sampling units. In the selected farms, a fixed number of female bovines aged over 2 years were randomly selected to undergo a comparative cervical tuberculin test; an epidemiologic questionnaire was also applied. In the state of Espírito Santo, the apparent prevalence of tuberculosis-positive farms was 7.6% (95% confidence interval [CI] = 5.7-9.9). Prevalence at the herd level varied from 4.6% (95% CI = 2.6-7.3) in region 1 to 11.1% (95% CI = 7.7-15.3) in region 2. The apparent prevalence of tuberculosis-positive animals was 0.7% (95% CI = 0.3-1.1) in the state, and the prevalence varied from 0.3% (95% CI = 0.2-0.6) in region 1 to 1.2% (95% CI = 0.3-2.9) in region 2. The risk factors associated with tuberculosis prevalence in Espírito Santo were the number of adult females ? 10 (odds ratio [OR] = 2.40; 95% CI = 1.17-5.31) and milking type (milking machine/milking parlor) (OR = 2.88; 95% CI = 1.36-5.86]). The state of Espírito Santo should set up a surveillance system to detect and control bovine tuberculosis, taking into account the importance of dairy farms and animal trade in the state.

scholarly journals Prevalence and herd-level risk factors for bovine tuberculosis in the State of Paraná, Brazil

2016 ◽  
Vol 37 (5Supl2) ◽  
pp. 3611 ◽  
Author(s):  
Maria Do Carmo Pessôa Silva ◽  
Vítor Salvador Picão Gonçalves ◽  
Ana Lourdes Arrais de Alencar Mota ◽  
Mariza Koloda ◽  
José Soares Ferreira Neto ◽  
...  
Keyword(s):  
Risk Factors ◽  
Bovine Tuberculosis ◽  
Logistic Regression Model ◽  
Herd Size ◽  
Disease Prevalence ◽  
The State ◽  
Western Region ◽  
Factors Associated ◽  
Worldwide Distribution ◽  
Low Prevalence

Bovine tuberculosis is a zoonosis with worldwide distribution. Its control has a direct impact on public health and livestock production. This study estimated the prevalence of infected herds and adult bovines and evaluated risk factors associated with the presence of tuberculosis within herds in the state of Paraná. The state was divided in seven livestock regions and independent sampling was performed. A total of 1,419 farms were sampled and 16,045 animals were tested using the intradermal comparative cervical tuberculin diagnostic test. The apparent and estimated prevalence rates in farms and adult bovine animals were 2.15% (95% CI: 1.31-3.00) and 0.42% (95% CI: 0.04-0.81), respectively. It was not possible to state with 95% confidence that the disease prevalence in any region was significantly different from that in other regions. There were no positive animals in the western region, and the prevalence of positive herds and animals in the other regions ranged from 1.03% to 3.89% and 0.17% to 1.08%, respectively. The logistic regression model identified larger herd size (OR = 2.4) and mechanical cmilking (OR = 5.18) as risk factors associated with the presence of bovine tuberculosis. The combination of low prevalence with risk factors associated to larger herds and more intensive dairy farming, renders the state of Paraná a good candidate for the implementation of industry-based free-herd accreditation schemes and makes a case for planning risk-based surveillance targeted at major dairy basins.

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

2016 ◽  
Vol 37 (5Supl2) ◽  
pp. 3647 ◽  
Author(s):  
Mariana Ramos Queiroz ◽  
Ana Cláudia Mello Groff ◽  
Nariléia Dos Santos Silva ◽  
José Henrique Hildebrand Grisi-Filho ◽  
Marcos Amaku ◽  
...  
Keyword(s):  
Risk Factors ◽  
Bovine Tuberculosis ◽  
Dairy Herd ◽  
Rio Grande ◽  
Tuberculin Test ◽  
The State ◽  
Surveillance Systems ◽  
Rio Grande Do Sul ◽  
Factors Associated ◽  
Minimum Interval

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.

scholarly journals Epidemiologic characterization of bovine tuberculosis in the State of Rondônia, Brazil

2016 ◽  
Vol 37 (5Supl2) ◽  
pp. 3639 ◽  
Author(s):  
Fabiano Benitez Vendrame ◽  
Marcos Amaku ◽  
Fernando Ferreira ◽  
Evelise Oliveira Telles ◽  
José Henrique Hildebrand Grisi-Filho ◽  
...  
Keyword(s):  
Bovine Tuberculosis ◽  
Tuberculin Test ◽  
Reproductive Activity ◽  
Cross Sectional Study ◽  
Fixed Number ◽  
The State ◽  
Cross Sectional ◽  
Apparent Prevalence ◽  
Primary Sample

A cross sectional study was performed between June 2009 and March 2010 to determine the situation of bovine tuberculosis (bTB) in Rondônia. The state was divided into three regions and, in each of them, 300 farms with reproductive activity were randomly chosen and considered as primary sample units. In the selected farms, an epidemiologic questionnaire was applied. A fixed number of bovine females older than two years of age was randomly selected and tested through comparative cervical tuberculin test. Considering the State of Rondônia, the apparent prevalence of bTB positive farms was 2.3% (95% CI = 1.5–3.5%). The prevalence in the regions varied from 1.7% (95% CI = 0.7 – 4%) to 3% (95% CI = 1.6–5.7%). The apparent prevalence of bTB positive animals in the State of Rondônia was 0.12% (95% CI = 0.06–0.25%) and varied from 0.08% (95% CI = 0.04–0.18%) to 0.15% (95% CI = 0.07–0.33%) in the regions. The risk factor associated to tuberculosis in the State of Rondônia was the acquisition of animals (OR = 7.1; 95% CI = 1.6–31.1). The State of Rondônia should implement a surveillance system to detect bTB-infected herds to certify them as bTB-free. Moreover, an efficient health education program to inform farmers to test replacement animals for bTB prior to introduction in their herds should also be implemented.

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