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Bovine Tuberculosis

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https://www.readbyqxmd.com/read/28089289/evaluation-of-five-serologic-assays-for-bovine-tuberculosis-surveillance-in-domestic-free-range-pigs-from-southern-spain
#1
Fernando Cardoso-Toset, Inmaculada Luque, Librado Carrasco, Francisco Jurado-Martos, María Ángeles Risalde, Ángel Venteo, José A Infantes-Lorenzo, Javier Bezos, Paloma Rueda, Istar Tapia, Christian Gortázar, Lucas Domínguez, Mercedes Domínguez, Jaime Gomez-Laguna
In countries where bovine tuberculosis (bTB) is still prevalent the contact among different animal species in extensive systems contributes to the circulation of Mycobacterium bovis (M. bovis) and other members of the Mycobacterium tuberculosis complex (MTC). Thus, free-range pigs can develop subclinical infections and may contribute to disease spread to bovine and wildlife. Serodiagnosis has been proposed as a screening tool for detecting infected pig herds; however, the value of this method to obtain an accurate diagnosis in this species is still not clear...
December 29, 2016: Preventive Veterinary Medicine
https://www.readbyqxmd.com/read/28077756/developing-a-risk-based-trading-scheme-for-cattle-in-england-farmer-perspectives-on-managing-trading-risk-for-bovine-tuberculosis
#2
R Little, K Wheeler, S Edge
This paper examines farmer attitudes towards the development of a voluntary risk-based trading scheme for cattle in England as a risk mitigation measure for bovine tuberculosis (bTB). The research reported here was commissioned to gather evidence on the type of scheme that would have a good chance of success in improving the information farmers receive about the bTB risk of cattle they buy. Telephone interviews were conducted with a stratified random sample of 203 cattle farmers in England, splitting the interviews equally between respondents in the high-risk area and low-risk area for bTB...
January 11, 2017: Veterinary Record
https://www.readbyqxmd.com/read/28077246/testing-of-a-palatable-bait-and-compatible-vaccine-carrier-for-the-oral-vaccination-of-european-badgers-meles-meles-against-tuberculosis
#3
Sonya Gowtage, Gareth A Williams, Ray Henderson, Paul Aylett, Duncan MacMorran, Si Palmer, Andy Robertson, Sandrine Lesellier, Stephen P Carter, Mark A Chambers
The oral vaccination of wild badgers (Meles meles) with live Bacillus Calmette-Guérin (BCG) is one of the tools being considered for the control of bovine tuberculosis (caused by Mycobacterium bovis) in the UK. The design of a product for oral vaccination requires that numerous, and often competing, conditions are met. These include the need for a highly palatable, but physically stable bait that will meet regulatory requirements, and one which is also compatible with the vaccine formulation; in this case live BCG...
January 9, 2017: Vaccine
https://www.readbyqxmd.com/read/28072845/tuberculosis-detection-in-paratuberculosis-vaccinated-calves-new-alternatives-against-interference
#4
Miriam Serrano, Natalia Elguezabal, Iker A Sevilla, María V Geijo, Elena Molina, Rakel Arrazuria, Alfonso Urkitza, Gareth J Jones, Martin Vordermeier, Joseba M Garrido, Ramón A Juste
Paratuberculosis vaccination in cattle has been restricted due to its possible interference with the official diagnostic methods used in tuberculosis eradication programs. To overcome this drawback, new possibilities to detect Mycobacterium bovis infected cattle in paratuberculosis vaccinated animals were studied under experimental conditions. Three groups of 5 calves each were included in the experiment: one paratuberculosis vaccinated group, one paratuberculosis vaccinated and M. bovis infected group and one M...
2017: PloS One
https://www.readbyqxmd.com/read/28062011/molecular-identification-of-mycobacterium-tuberculosis-in-cattle
#5
N Sweetline Anne, B S M Ronald, T M A Senthil Kumar, P Kannan, A Thangavelu
Bovine tuberculosis continued to be a re-emerging problem in some countries especially in endemic areas due to the fact that human and animal health surveillance system is not adopted to diagnose the infection. This crisis can be attributed due to sharing of the same habitat especially in rural areas. In the present study, a total of 148 samples were collected from cattle for isolation over a period of 3 years from cattle with and without lesions, of which 67 isolates were obtained by culture. Fifty one isolates were identified as Mycobacterium tuberculosis complex (MTBC) by IS6110 PCR of which 43 (84...
January 2017: Veterinary Microbiology
https://www.readbyqxmd.com/read/28061860/preliminary-investigation-of-the-transmission-of-tuberculosis-between-farmers-and-their-cattle-in-smallholder-farms-in-northwestern-ethiopia-a-cross-sectional-study
#6
Anwar Nuru, Gezahegne Mamo, Aboma Zewude, Yitayal Mulat, Gashaw Yitayew, Aschalew Admasu, Girmay Medhin, Rembert Pieper, Gobena Ameni
BACKGROUND: The feeding habits and close physical contact between Ethiopian farmers and their cattle promote the transmission of tuberculosis (TB) between the farmers and their cattle. This study aimed to investigate the transmission of TB between farmers and their cattle in smallholder farms in northwestern Ethiopia. RESULTS: A total of 70 human TB lymphadenitis (TBLN) cases visiting the Felegehiwot Comprehensive Specialized Hospital in Bahir Dar City and 660 cattle were investigated...
January 7, 2017: BMC Research Notes
https://www.readbyqxmd.com/read/28043636/evaluation-the-virulence-of-mycobacterium-bovis-isolated-from-milk-samples-through-histopathological-study-in-laboratory-animals
#7
I M Al-Saqur, A N Al-Thwani, I M Al-Attar, M S Al-Mashhadani
INTRODUCTION: Mycobacterium bovis has a broad host range, and it is the principal agent responsible for tuberculosis (TB) in bovine, domestic and wild mammals. M. bovis also infects human, causing zoonotic TB through ingestion, inhalation and, less frequently by contact with mucous membranes and broken skin. Zoonotic TB was formerly an endemic disease, usually transmitted to man by consumption of raw cow's milk. It is indistinguishable clinically or pathologically from TB caused by M...
December 2016: International Journal of Mycobacteriology
https://www.readbyqxmd.com/read/28043632/mycobacterial-coinfection-and-persisting-bovine-tuberculosis-has-the-time-arrived-for-a-policy-review
#8
Nader Mosavari, Morad Moradi Geravand, Keyvan Tadayon, Rohollah Keshavarz
OBJECTIVE/BACKGROUND: Bovine tuberculosis (BTb) is mainly a disease of cattle, although it continues to infect human populations across the world. Operation of a test and slaughter plan in Iran since 1981 has lowered the frequency of BTb from >5% to <0.14% at the national scale. In 2015, unusual uncontrollable epidemics of BTb were detected in two cattle farms in municipal suburbs of Qazvin and Isfahan. These farms had a tuberculin-test-certified record of BTb-free status for the past 5 consecutive years, with no new cattle registered with either of the two herds during this time period...
December 2016: International Journal of Mycobacteriology
https://www.readbyqxmd.com/read/28043589/tuberculosis-in-slaughtered-cattle-and-workers-in-some-abattoirs-of-baghdad-governorate
#9
A N Al-Thwani, M S Al-Mashhadani
OBJECTIVE/BACKGROUND: Tuberculosis (the white plague) is regarded as one of the most widespread infectious diseases and continues to be a leading cause of death and the most prominent public health problem worldwide. It is caused by Mycobacterium tuberculosis complex, which refers to a group of seven species; one of them known as Mycobacterium bovis-the cause of bovine-type tuberculosis-has an exceptionally wide host range. It infects cattle, humans, goats, cats, dogs, buffalo, and deer...
December 2016: International Journal of Mycobacteriology
https://www.readbyqxmd.com/read/28043587/cloning-expression-and-purification-of-recombinant-protein-mpt-64-from-a-virulent-strain-of-mycobacterium-bovis-in-a-prokaryotic-system
#10
Maryam Mohammadi Tashakkori, Majid Tebianian, Mohammad Tabatabaei, Nader Mosavari
OBJECTIVE: Tuberculosis (TB) is a zoonotic infectious disease common to humans and animals that is caused by the rod-shaped acid-fast bacterium Mycobacterium bovis. Rapid and sensitive detection of TB is promoted by specific antigens. Virulent strains of the TB complex from M. bovis contain 16 regions of difference (RD) in their genome that encode important proteins, including major protein of Mycobacterium Tuberculosis 64 (MBT-64, which is a primary immune-stimulating antigen encoded by RD-2...
December 2016: International Journal of Mycobacteriology
https://www.readbyqxmd.com/read/28043585/occurrence-of-zoonotic-tuberculosis-in-occupationally-exposed-high-risk-groups-in-peshawar-pakistan
#11
Irfan Khattak, Muhammad H Mushtaq, Sultan Ayaz, Mansur U D Ahmad, Sadeeq U Rahman
OBJECTIVE/BACKGROUND: To determine the occurrence of active pulmonary tuberculosis (TB) due to Mycobacterium bovis in abattoir workers, butchers, livestock farmers, and veterinarians and to document their knowledge and practices regarding bovine TB (bTB). METHODS: A cross-sectional study was conducted among abattoir workers, butchers, livestock farmers, veterinary doctors, and veterinary assistants. Sputum samples were collected from the respondents with a chronic cough and data on sociodemographic conditions, knowledge, and practices regarding TB were obtained...
December 2016: International Journal of Mycobacteriology
https://www.readbyqxmd.com/read/28043575/rapid-identification-of-mycobacterium-avium-ssp-paratuberculosis-laboratory-strains-by-is900-nested-polymerase-chain-reaction
#12
Mohammad Mohammad Taheri, Nader Mosavari, Mohammad Mehdi Feizabadi, Keyvan Tadayon, Rouholah Keshavarz, Reza Aref Pajoohi, Kioomars Soleimani, Shojaat Dashti Pour
INTRODUTION: Mycobacterium avium ssp paratuberculosis (MAP) causes paratuberculosis (Johne's disease) in ruminants. As a species, M. avium comprises M. avium subsp. hominissuis and a number of clones that are known to have evolved from this subspecies, namely M. avium subsp. avium (MAA), M. avium subsp. silvaticum, and MAP. Despite the very high genomic similarity of MAP and MAA, the insertion sequence IS900, which is 1,451-bp long, is now understood to be exclusively present in 10-20 copies in the genome of MAP...
December 2016: International Journal of Mycobacteriology
https://www.readbyqxmd.com/read/28043574/trend-of-tested-and-slaughtered-cattle-for-bovine-tuberculosis-in-iran-during-2000-2014
#13
Mohammad Hasan Rabiee, Javad Emami, Hamideh Hasannejad, Mehrdad Tirandaz
OBJECTIVE/BACKGROUND: Bovine tuberculosis is one of the zoonotic diseases and important in terms of both public health and its impact on the decrease in animal products and heavy economic losses. Consequently, its control is warranted. The key in controlling bovine tuberculosis is to test and slaughter the infected cows. In this method, animals >3months of age undergo a comparative tuberculin test, and the positive cases are sent to a slaughterhouse. This study reviews the trend of coverage process of testing and slaughtering of infected cows in Iran during 2000-2014 to evaluate the bovine tuberculosis control in this period...
December 2016: International Journal of Mycobacteriology
https://www.readbyqxmd.com/read/28043572/identification-and-comparison-of-genetic-pattern-of-human-and-cattle-m-bovis-isolates-from-zanjan-province-by-restriction-fragment-length-polymorphism-and-dna-hybridization
#14
Mahdi Dehghanpour, Nader Mosavari, Hamid Baghchesaraei, Mohammad Mohammad Taheri, Mahdi Babaie
BACKGROUND/OBJECTIVE: Mycobacterium bovis, responsible for bovine tuberculosis is a member of Mycobacterium tuberculosis complex. This bacterium is responsible for infection in wide range of hosts. Bovine tuberculosis is well known as Zoonotic tuberculosis in human and is transmitted via consumption of unpasteurized milk, contaminated meat products and also by ingestion of Mycobacteria from the environment. The objectives of the present study was to compare the genomic pattern of M. bovis obtained from human subjects in Zanjan province, with those of atypic cattle in Iran by Restriction fragment length polymerization and DNA hybridization methods...
December 2016: International Journal of Mycobacteriology
https://www.readbyqxmd.com/read/28043566/interferon-%C3%AE-assay-a-high-sensitivity-specific-and-appropriate-method-for-detection-of-bovine-tuberculosis-in-cattle
#15
R Keshavarz, N Mosavari, M M Geravand, Keyvan Tadayon, R A Pajoohi, K Solemani, M Ameri, G V Gilani
Bovine tuberculosis (TB) is an important zoonotic disease that is caused by Mycobacterium bovis. Eradication efforts in developed countries have reduced the prevalence of this disease significantly. TB can be difficult to diagnose based only on the clinical signs; therefore, it is usually diagnosed in the field with the tuberculin skin test and diagnostic blood tests, including the lymphocyte proliferation assay, the interferon (IFN)-γ assay, and enzyme-linked immunosorbent assay. The aim of this study was to compare the tuberculin and IFN-γ tests...
December 2016: International Journal of Mycobacteriology
https://www.readbyqxmd.com/read/28031264/mycobacterium-bovis-requires-p27-lprg-to-arrest-phagosome-maturation-and-replicate-within-bovine-macrophages
#16
Cristina Lourdes Vázquez, María Verónica Bianco, Federico Carlos Blanco, Marina Forrellad, Maximiliano Gabriel Gutierrez, Fabiana Bigi
Mycobacterium bovis causes tuberculosis in a wide variety of mammals with strong tropism for cattle and eventually humans. P27, also called LprG, is among the proteins involved in the mechanisms of virulence and persistence of M. bovis and Mycobacterium tuberculosis Here, we describe a novel function of P27 in the interaction of M. bovis with its natural host cell, the bovine macrophage. We found that a deletion in the p27-p55 operon impairs the replication of M. bovis in bovine macrophages. Importantly, we show for the first time that M...
December 28, 2016: Infection and Immunity
https://www.readbyqxmd.com/read/28029286/survivability-of-mycobacterium-bovis-on-salt-and-salt-mineral-blocks-fed-to-cattle
#17
John B Kaneene, Joseph A Hattey, Carole A Bolin, James Averill, RoseAnn Miller
OBJECTIVE To determine the survivability of Mycobacterium bovis on salt and salt-mineral blocks in typical weather conditions in Michigan over two 12-day periods at the height of summer and winter. SAMPLE 4 salt (NaCl) and 4 salt-mineral blocks inoculated with pure cultures of a strain of M bovis currently circulating in Michigan livestock and wildlife. PROCEDURES In the summer and again in the winter, inoculated blocks were placed in secured outdoor facilities where equal numbers of each block type (2/type/season) were exposed to shade or sunlight...
January 2017: American Journal of Veterinary Research
https://www.readbyqxmd.com/read/28027717/efficiency-of-slaughterhouse-surveillance-for-the-detection-of-bovine-tuberculosis-in-cattle-in-northern-ireland
#18
A V Pascual-Linaza, A W Gordon, L A Stringer, F D Menzies
Post-mortem examination continues to play an important surveillance role in the bovine tuberculosis (bTB) eradication programme in Northern Ireland. It is estimated that 18-28% of new bTB herd breakdowns are disclosed by the detection of bTB lesions in animals routinely slaughtered. The purpose of this study was to compare the performance of different slaughterhouses in Northern Ireland in detecting bTB-lesioned animals at routine slaughter (LRS) and to apply the findings to maximize the sensitivity of bTB slaughterhouse surveillance...
December 28, 2016: Epidemiology and Infection
https://www.readbyqxmd.com/read/28012389/valuing-conservation-benefits-of-disease-control-in-wildlife-a-choice-experiment-approach-to-bovine-tuberculosis-management-in-new-zealand-s-native-forests
#19
Peter Tait, Caroline Saunders, Graham Nugent, Paul Rutherford
We assess the non-monetary environmental benefits that accrue incidentally in New Zealand (NZ) from pest management conducted primarily to control an animal disease, bovine tuberculosis (TB). TB is an infectious disease that is one of the world's most serious animal health problems and, in many parts of the developing world, still a major mortality risk for humans. The incidence of TB in New Zealand (NZ) farmed livestock has been reduced progressively over the last 20 years, largely due to extensive and sustained population control of the main wildlife reservoir of disease, the introduced brushtail possum...
December 21, 2016: Journal of Environmental Management
https://www.readbyqxmd.com/read/28007592/colostrum-proinflammatory-cytokines-as-biomarkers-of-bovine-immune-response-to-bovine-tuberculosis-btb
#20
Eduardo Sánchez-Soto, Rosa Ponce-Ramos, Rodolfo Hernández-Gutiérrez, Abel Gutiérrez-Ortega, Angel H Álvarez, Moisés Martínez-Velázquez, Angel E Absalón, Pablo Ortiz-Lazareno, Alberto Limón-Flores, Ciro Estrada-Chávez, Sara E Herrera-Rodríguez
Bovine colostrum contains compounds, which provide passive immune protection from mother to newborn calves. Little is known about cytokine levels and their role in bovine colostrum. Moreover, the capacity of bovine colostrum cells to mount specific immune responses after natural exposure to bovine tuberculosis (bTB) antigens in dairy herds has not been studied, thus far. The purpose of this study was to identify biomarkers for bTB infection measurable in bovine colostrum. The present study reveals that isolated-immune colostrum cells can mount a specific immune response against bTB antigens, by measuring the novo IFN-γ release in cell culture...
December 19, 2016: Microbial Pathogenesis
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