A case of bovine tuberculosis in pigs in Poland – a country free from the disease

Lipiec, Marek; Radulski, Łukasz; Szulowski, Krzysztof

doi:10.26444/aaem/90979

Cited by 13 publications

(13 citation statements)

References 13 publications

(14 reference statements)

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“…Poland has maintained official TB-free status for over a decade although TB has been sporadically found in cattle and other species ( 6 , 19 , 23 ). The UK is one of the few countries in Europe that does not have TB-free status ( 5 ) and alpacas imported from that country jeopardise Poland’s TB status.…”

Section: Discussionmentioning

confidence: 99%

The potential risk of international spread of Mycobacterium bovis associated with movement of alpacas

Krajewska‐Wędzina

Miller

Didkowska

et al. 2022

Journal of Veterinary Research

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Introduction The study highlights the transboundary nature of tuberculosis (TB) in alpacas and the failure of current ante-mortem testing protocols (the tuberculin skin and Enferplex Camelid TB tests) to identify TB-free alpaca herds and individuals for export. Our research and the available literature indicate that the alpaca (Vicugna pacos) is extremely susceptible to Mycobacterium bovis infection, and that testing periodicity fails to take into account that animals do not manifest disease symptoms for a long time. The skin test failed to identify Mycobacterium bovis infection in two alpacas prior to their movement from the UK to Poland. The animals were purchased by a breeding centre in Poland, and were then shown at an international animal exhibition. The last owner of the alpacas before their deaths from TB bought the infected animals unwittingly in order to run rehabilitation activities with disabled children on his farm. Material and Methods Thoracic lymph node, lung and liver tissue samples obtained at necropsy were examined histopathologically after Ziehl–Neelsen staining. Tissue samples were homogenised and mycobacteria present there were cultured on Stonebrink’s medium during a 6-week incubation. A commercial test using polymorphism of the chromosomal direct repeat region provided species identification and additional identification was by spacer oligonucleotide typing and mycobacteria interspersed repetitive unit–variable number tandem repeat analysis with a gel electrophoresis protocol. Results The microbiological examination confirmed multiorgan TB caused by the SB0666 spoligotype of Mycobacterium bovis. Conclusion Due to the suboptimal performance of current diagnostic tests for TB in alpacas, there is a risk that infected animals may be moved unwittingly. A risk of TB spread associated with the international movement of alpacas is implied by this study.

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Section: Discussionmentioning

confidence: 99%

The potential risk of international spread of Mycobacterium bovis associated with movement of alpacas

Krajewska‐Wędzina

Miller

Didkowska

et al. 2022

Journal of Veterinary Research

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“…From these, suspected mycobacterial isolates were detected in 60% of cases based on PCR genotyping methods. In Poland, authors Lipiec et al (2019) found M. bovis in two pigs maintained on the farm. Also in Poland, the correct and long-term control of cattle has resulted in sporadic cases of bovine tuberculosis in pigs.…”

Section: Discussionmentioning

confidence: 99%

Mycobacterium bovis detection in slaughtered pigs in the state of Rio Grande do Sul, Brazil

2021

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The infection by the Mycobacterium genus is important in pig farming due to the economic losses caused by total or partial carcass condemnation in slaughterhouses. The present study investigated the occurrence of a tuberculosis outbreak in pigs, based on the identification of lesions at the slaughter line of a slaughterhouse. At the inspection line of the slaughterhouse, carcasses were identified with viscera containing macroscopic lesions that indicated tuberculosis (granulomatous lymphadenitis). Tracheobronchial, mesenteric, and submandibular lymph nodes were collected, as well as liver samples and their corresponding lymph nodes. The samples were sent to the Federal Agricultural Defense Laboratory (LFDA/RS) and processed for the diagnosis of tuberculosis and the molecular characterization of Mycobacterium bovis. Based on the results of post-mortem and laboratory inspections, the occurrence was characterized as a tuberculosis outbreak in pigs, which originated from a farm in the state of Rio Grande do Sul, Brazil. Over three months, three batches, adding up to 2884 animals, were sent to slaughter, of which 102 (3.5%) had tuberculosis-like lesions at the inspection line. Based on these results, the productive process was investigated, assessing the feeding, water supply, and milk whey offered in the diet of pigs. It was concluded that the outbreak was caused by feeding unpasteurized or inadequately pasteurized (insufficient time x temperature relation) whey to the pigs. The use of whey from cheese production is a frequent practice in the state of Rio Grande do Sul and one of the risk factors for granulomatous lymphadenitis in pigs.

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“…Interestingly, in Germany a geographic division is shown: while in the northern part predominantly M. bovis is found, in the south, close to the alp region, M. caprae dominates [36]. Also in Poland both species are isolated from cattle with bTB [37]. Wild animals serving as bTB reservoirs are known in both countries.…”

Section: Discussionmentioning

confidence: 99%

Tuberculosis in a pet ferret (Mustela putorius furo)

Barth

Menge

Hillemann

et al. 2020

Tierarztl Prax Ausg K

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A 9-month old pet ferret was presented to a veterinarian with symptoms of weight loss, apathy, and hyporexia. Explorative laparotomy identified a firm mass of approximately 2 × 2 × 2 cm in size in the mesentery of the jejunum. Because of the poor general condition and the unfavorable prognosis, the ferret was euthanized during surgery. The mass was resected in total and submitted to histological examination which revealed a granulomatous and necrotizing lymphadenitis. Acid fast bacteria were detected by Fite-Faraco staining leading to the suspicion of an infection with Mycobacteria sp. PCR confirmed presence of DNA of members of the Mycobacterium tuberculosis complex, subsequently specified as M. bovis. The detected spoligotype SB2548 was described for the first time. Ferrets are presented to veterinarians with increasing frequency because of their growing popularity as pet animals. Since these animals are highly susceptible to mycobacterial infections, mycobacteriosis and especially zoonotic relevant tuberculosis should be considered as differential diagnosis.

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A case of bovine tuberculosis in pigs in Poland – a country free from the disease

Cited by 13 publications

References 13 publications

The potential risk of international spread of Mycobacterium bovis associated with movement of alpacas

The potential risk of international spread of Mycobacterium bovis associated with movement of alpacas

Mycobacterium bovis detection in slaughtered pigs in the state of Rio Grande do Sul, Brazil

Tuberculosis in a pet ferret (Mustela putorius furo)

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