Epidemiology of ovine listeriosis in Great Britain

Wilesmith, J. W.; Gitter, M.

doi:10.1136/vr.119.19.467

Cited by 47 publications

(54 citation statements)

References 0 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…Freqüentemente os surtos de listeriose ocorrem no inverno ou início da primavera em animais alimentados com silagem (Charlton & Garcia 1977, Vandegraaff et al 1981, Barlow & McGorum 1985, Wilesmith & Gitter 1986. Entretanto, em casos de encefalite por L. monocytogenes em bovinos e ovinos no Rio Grande do Sul (Sanches et al 2000, Schild 2001) esses dados epidemiológicos não têm sido constatados e a doença tem sido observada na primavera e verão em animais a campo.…”

Section: Discussão Discussão Discussão Discussão Discussãounclassified

Forma nervosa de listeriose em caprinos

et al. 2006

View full text Add to dashboard Cite

Em um rebanho de 100 caprinos, foram observados casos de uma doença neurológica em três animais adultos jovens (identificados como A-C) entre outubro e dezembro de 2004. Os sinais clínicos incluíam desvio da cabeça, torcicolo, nistagmo, andar desequilibrado e quedas que acabavam em decúbito, durante o qual o caprino executava movimentos de pedalagem com os membros rígidos. Tratamento com antibióticos no Caprino C resultou em remissão temporária dos sinais. A evolução clínica foi de 5, 10 e 30 dias, respectivamente, para os Caprinos A, B e C. O Caprino A morreu espontaneamente e os outros dois foram eutanasiados na fase terminal da doença. Não foram observadas alterações macroscópicas. Lesões histológicas eram predominantemente unilaterais e consistiam de alterações inflamatórias e degenerativas que se estendiam do bulbo ao tálamo. Em todos os casos havia manguitos perivasculares de um ou mais tipos de células mononucleares (linfócitos, plasmócitos, macrófagos ativados) e ocasionalmente neutrófilos associados a áreas de malacia onde células Gitter preenchiam os espaços de perda do parênquima. Adicionalmente, o Caprino B tinha microabscessos no bulbo, ponte, e mesencéfalo e infiltrado neutrofílico e linfocítico multifocal nos fascículos do nervo trigêmeo, próximo ao gânglio de Gasser, e nas leptomeninges do cerebelo. No tronco encefálico do Caprino C, a reação era multifocal e com característica granulomatosa e incluía células epitelióides e, ocasionalmente, células gigantes multinucleadas. Listeria sp foi detectada por imunoisto-química em cortes de mesencéfalo rotineiramente processado dos Caprinos A e C e de ponte do Caprino B.

show abstract

Section: Discussão Discussão Discussão Discussão Discussãounclassified

Forma nervosa de listeriose em caprinos

et al. 2006

View full text Add to dashboard Cite

show abstract

“…Listeriosis may occur as a large outbreak within a flock, but noteworthy, it is unlikely for different clinical manifestations to be observed during the same outbreak (Low and Donachie, 1997;Wilesmith and Gitter, 1986). This may indicate differences in organ or tissue tropism between L. monocytogenes strains.…”

Section: Listeriosis In Ruminants and Humans Clinical Presentation Anmentioning

confidence: 99%

“…In ruminants, it has been linked in particular to the ingestion of poorly fermented silage (Gray, 1960;Wilesmith and Gitter, 1986). However, this association is being increasingly called into question due to the low number of systematic investigations on the one hand and diverging study results on the other.…”

Section: Listeriosis In Ruminants and Humans Clinical Presentation Anmentioning

confidence: 99%

“…It carries a high fatality rate and may present in 5 different clinical manifestations. Most common are encephalitides, followed by abortions in the last third of pregnancy (Wilesmith and Gitter, 1986). Other conditions like septicaemia in newborns as a consequence of in utero infection, mastitis and keratoconjunctivitis/uveitis occur less frequently.…”

Section: Listeriosis In Ruminants and Humans Clinical Presentation Anmentioning

confidence: 99%

See 1 more Smart Citation

Listeria monocytogenes infection in ruminants: Is there a link to the environment, food and human health? A review

Walland¹,

Lauper²,

Frey³

et al. 2015

SAT

View full text Add to dashboard Cite

Listeria (L.) monocytogenes is widely distributed in the environment, but also has the ability to cause serious invasive disease in ruminants and humans. This review provides an overview of listeriosis in ruminants and discusses our insufficient understanding of reservoirs and possible cycling ofL. monocytogenes between animal and human hosts, food and the environment. It indicates gaps in our knowledge of the role of genetic subtypes in L. monocytogenes ecology and virulence as well as risk factors, in vivo diagnostics and pathogenesis of listeriosis in ruminants. Filling these gaps will contribute to improving the control of L. monocytogenes and enhancing disease prevention. As the prevalence of listeriosis in ruminants in Switzerland is likely to be underestimated, propositions concerning improvement options for surveillance of listeriosis in ruminants are provided. Summary Listeria (L.) monocytogenes is widely distributed in the environment, but also has the ability to cause serious invasive disease in ruminants and humans. This review provides an overview of listeriosis in ruminants and discusses our insufficient understanding of reservoirs and possible cycling of L. monocytogenes between animal and human hosts, food and the environment. It indicates gaps in our knowledge of the role of genetic subtypes in L. monocytogenes ecology and virulence as well as risk factors, in vivo diagnostics and pathogenesis of listeriosis in ruminants. Filling these gaps will contribute to improving the control of L. monocytogenes and enhancing disease prevention. As the prevalence of listeriosis in ruminants in Switzerland is likely to be underestimated, propositions concerning improvement options for surveillance of listeriosis in ruminants are provided.

show abstract

“…The species Listeria monocytogenes is of particular importance because of its pathogenicity to humans and various animals. The occurrence of listeriosis in sheep and goats has been associated with the feeding of silage contaminated with L. monocytogenes (43,45). Furthermore, there is evidence that poor-quality silage is one of the primary sources of contamination of raw milk by L. monocytogenes (33).…”

Section: Listeriamentioning

confidence: 99%