Principais aspectos da infecção por Leptospira sp em ovinos

Melo, Luiza de Souza Seixas; Castro, Márcio Botelho de; Leite, Rômulo Cerqueira; Moreira, É. C.; Melo, Cristiano Barros de

doi:10.1590/s0103-84782010005000072

Cited by 15 publications

(22 citation statements)

References 24 publications

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“…On the other hand, surveys have shown that the infection of sheep by Leptospira sp seems to be common and, in most cases, is associated with the presence of the serovar Hardjo (MELO et al, 2010), which is the one the most responsible for reproductive losses in cattle and also causes the largest number of spontaneous abortions in sheep (HERRMANN et al, 2004).…”

Section: Contentmentioning

confidence: 99%

Anti- Leptospira spp. antibodies in several animal species on the same farm

Souza

Castro²,

Moreira³

et al. 2016

Biosci. J.

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ABSTRACT:Leptospirosis is a zoonotic disease that occurs worldwide, affecting pets and livestock that can be a source of infection for humans, considered therefore an important disease in public health. Thus, an investigation was made into the occurrence of anti-Leptospira agglutinins in several animal species on a farm located in the municipality of Uberlândia, state of Minas Gerais, Brazil. A total of 172 blood serum samples were collected from five species: cattle, dogs, goats, horses and sheep. The diagnosis was performed by means of the microscopic agglutination test (MAT), using a collection of 12 live antigens. Of the 172 animals evaluated, 62 (36%) were seroreactive, and the most frequent serovars in each species were: Hardjo (54.54%), Icterohaemorrhagiae (27.27%), and Autumnalis (18.18%) in cattle; Icterohaemorrhagiae (37.5%), Autumnalis (31%), Canicola (18.7%) and Hardjo (12.5%) in dogs; Grippotyphosa (75%) and Hardjo (25%) in goats; Icterohaemorrhagiae (50%), Grippotyphosa (37.5%) and Hardjo (12.5%) in horses, and Hardjo (34.78%); Grippotyphosa (26.08%); Bratislava (17.39%), Autumnalis (17.39%) and Icterohaemorrhagiae (4.4%) in sheep. It is believed that the occurrence of anti-Leptospira agglutinins can be traced back to a source of infection that is common to these species, or that the agent was probably transmitted between them because they live in close proximity to each other.

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Section: Contentmentioning

confidence: 99%

Anti- Leptospira spp. antibodies in several animal species on the same farm

Souza

Castro²,

Moreira³

et al. 2016

Biosci. J.

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“…in sheep was first reported by Santa Rosa and Pestana de Castro (10), with a prevalence of 34% (dilution of 1:200 to 1:600) for prevalent Canicola and Icterohaemorrhagie serovars (11). The serum samples were also reactive against the serovars Pomona, Sejroe, Grippotyphosa, Batavie, Hyos and Australis.…”

Section: Historymentioning

confidence: 59%

“…The serum samples were also reactive against the serovars Pomona, Sejroe, Grippotyphosa, Batavie, Hyos and Australis. According to their results, dogs and rats served as the source of infection (11).…”

Section: Historymentioning

confidence: 99%

Ovine leptospirosis in Brazil

Lucheis¹,

Ferreira²

2011

J. Venom. Anim. Toxins incl. Trop. Dis

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Leptospirosis is a zoonosis distributed worldwide, endemic mainly in humid subtropical and tropical countries, with epidemic potential. It affects a range of both wild and domestic animals, including sheep, which transport leptospires in their urine and, therefore, can infect other animals and humans who deal with them. Therefore, leptospirosis is characterized as an occupational zoonosis. In individual herds leptospirosis can cause severe economic loss due to miscarriages and outbreaks of mastitis with a significant reduction of milk production. The disease is caused by Leptospira interrogans, which was reclassified into 13 pathogenic species, and distributed into more than 260 serovars classified into 23 serogroups. The clinical signs of infection may vary depending on the serovar and host. In maintenance hosts, antibody production is generally low; there are relatively mild signs of the disease, and a prolonged carrier state with organisms in the kidneys. In incidental hosts, the disease may be more severe, with high titers of circulating antibodies and a very short or nonexistent renal carrier state. In general, young animals with renal and hepatic failure have more serious infections than adults. Several diseases may produce symptoms similar to those of leptospirosis, so that laboratory confirmation, through microscopic agglutination test, for example, is required. The effectiveness of treatment depends on early diagnosis and appropriate therapy, depending on clinical features, since leptospirosis can develop into chronic liver disease and nephropathy, progressing towards death. Improvements in habitation and sanitary conditions, rodent control, vaccination, isolation and treatment of affected animals are the main measures for the control of leptospirosis.

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“…Essa eliminação pode constituir um problema zoonótico para todos que entrarem em contato com o animal 16,17,18 . A leptospirose é um problema ocupacional, pois pesquisas de isolamentos que foram conduzidas em diversos países têm demonstrado a importância dos ovinos na epidemiologia da doença, principalmente em relação à saúde pública 7,16 .…”

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