Leptospirosis seroprevalence and risk factors for sheep in Maranhão state, Brazil

Carvalho, Sônia Maria de; Mineiro, Ana Lys Bezerra Barradas; Castro, Vanessa; Genovez, Margareth Élide; Azevêdo, Sérgio Santos de; Costa, Francisco Assis Lima

doi:10.1007/s11250-013-0505-1

Cited by 15 publications

(18 citation statements)

References 11 publications

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“…[11] analyzed 379 sheep blood serum samples using a microscopic agglutination test (MAT); of the 37 herds studied, 30 (81%) had at least one seropositive animal while the individual seroprevalence was 32%.…”

Section: Introductionmentioning

confidence: 99%

Leptospira spp. infection in sheep herds in southeast Brazil

Barbante

Shimabukuro

Langoni

et al. 2014

J Venom Anim Toxins incl Trop Dis

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BackgroundWith the aim of studying Leptospira spp. infection in sheep herds, blood samples and respective kidney and liver fragments were collected from 100 animals from twenty different properties during slaughter at a meat company in the Sorocaba region, São Paulo state, southeast Brazil. The microscopic agglutination test (MAT) was performed with 29 strains of Leptospira spp. To identify the agent in the liver and kidney, 100 samples of each tissue were submitted to culture in Fletcher medium and analyzed by the polymerase chain reaction (PCR) for Leptospira spp.ResultsMAT detected 23 samples serologically positive for one or more Leptospira spp. serovars and significantly more for Autumnalis. Eight (4%) samples were positive in culture (four kidneys and four livers), corresponding to five animals with positive serology (one animal simultaneously positive for both kidney and liver) and two negatives. PCR detected Leptospira spp. in 14 samples (seven kidneys and seven livers) corresponding to 12 positive animals (two animals simultaneously positive for kidney and liver), of which ten were serologically positive and two negative.ConclusionsPCR was faster, more practical and more sensitive than culture for detecting leptospires. The results reinforce the importance of sheep in the epidemiological context of leptospirosis.

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Section: Introductionmentioning

confidence: 99%

Leptospira spp. infection in sheep herds in southeast Brazil

Barbante

Shimabukuro

Langoni

et al. 2014

J Venom Anim Toxins incl Trop Dis

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“…This serovar was reported all over Europe in the past years, in both wild and domestic animals. Also, infection in sheep with Grippotyphosa serovar could be related to the breeding farm management, as suggested J HELLENIC VET MED SOC 2017, 68(4) ΠΕΚΕ 2017 by other Authors (Andreoli et al, 2014, Ayral et al, 2014, de Carvalho et al, 2014, Żmudzki et al, 2016. In particular, the presence of this serovar in Tuscany could be related to hares' importation from eastern Europe for repopulation and hunting purposes (Treml et al, 2007, De Massis et al, 2012.…”

Section: Discussionmentioning

confidence: 84%

Leptospira spp. and Brucella ovis seroprevalence in sheep: preliminary results of one year surveillance program

Bertelloni

Turchi

Cerri

et al. 2018

J Hellenic Vet Med Soc

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: 20-11-2016: 20-11- Date of acceptance: 29-11-2016 ABSTRACT. In order to assess the diffusion of brucellosis by Brucella ovis and leptospirosis in sheep flocks in Tuscany, 410 blood samples were collected from males of 76 breeding farms from January to December 2015. All sera resulted negative for B. ovis. A percentage of 17.80% sera was found positive for Leptospira spp. Among all breeding farms, 34.21% resulted positive. The most represented serovars were Pomona (6.34%), Hardjo (4.14%), Grippotyphosa (3.17%) and Bratislava (1.70%). The highest antibody titers were detected for serovar Hardjo (1:25600) and serovars Pomona and Grippotyphosa (1:1600). These results confirm the role of sheep as maintenance host for serovar Hardjo and highlight the spreading of serovar Grippotyphosa in the study area. Constant field investigation, especially on farm animals, could be useful to determine trends and diffusion of some occupational re-emerging diseases, such as leptospirosis.

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“…O cálculo amostral foi realizado conforme Thrusfield (1995) e teve como base a população de 136.269 ovinos (IBGE, 2017), nível de confiança de 95% e percentual de margem de erro amostral de 5%, utilizando a prevalência de ±36,17% (Viegas et al, 1980;Caldas et al, 1983;Viegas et al, 1994;Azevedo et al, 2004;Higino et al, 2010;Melo et al, 2010;Alves et al, 2012;Carvalho et al, 2014;Costa et al, 2016;Pereira et al, 2018), resultando em amostragem mínima de 369 animais sendo 123 por mesorregião.…”

Section: Methodsunclassified

“…Os fatores de risco observados para a ocorrência de ovinos soropositivos a Leptospira spp., nos rebanhos nacionais são plantéis com mais de 48 animais (p=0,021; OR=2,26), participação em feiras e exposições (p=0,055; OR=9,05) (Alves et al, 2012), fornecimento de água de lagoa e/ou pequenas barragens (p=0,01; OR=12,95) (Carvalho et al, 2014), presença de felinos para combate de roedores (p=0,018; OR=2,15) (Rizzo et al, 2014) e a presença de roedores, felinos, caprinos, suínos (p=0,047; OR=0,44) e animais silvestres (p=0,0001) (Pereira et al, 2018).…”

Section: Introductionunclassified

“…Autumnalis, Ballum, Canicola, Icterohaemorrhagiae, Pomona, Tarassovi e Sejroe na Bahia (Viegas et al, 1980;Caldas et al, 1983;Viegas et al, 1994;Melo et al, 2010), Autumnalis, Andamana, Ballum e Djasiman na Paraíba (Higino et al, 2010;Alves et al, 2012;Costa et al, 2016), Ballum, Autumnalis e Pomona no Rio Grande do Norte (Azevedo et al, 2004) e Grippotyphosa, Sentot, Hardjo e Andanda no Maranhão (Carvalho et al, 2014;Pereira et al, 2018).…”

Section: Introductionmentioning

confidence: 99%

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Inquérito sorológico e fatores de riscos associados a ovinos soropositivos a Leptospira spp. no estado de Sergipe, Brasil

et al. 2020

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O objetivo desse estudo foi determinar a ocorrência e os fatores associados à soropositividade para Leptospira spp. em ovinos do estado de Sergipe, Brasil, a partir de 1.200 amostras coletadas de sessenta propriedades das suas três mesorregiões entre os anos de 2011 e 2012. Foi observada, pela reação de soroaglutinação microscópica, 37,7% (452/1.200; IC: 0.357-0.396) de ovinos soropositivos com 93,3% (56) de propriedades com pelo menos um animal positivo. Os sorogrupos reagentes predominantes foram: Sejroe (32,1%), Icterohaemorrhagiae (23,5%) e Grippotyphosa (22,4%), com presença também de reações para Australis (7,1%), Pomona (3,8%), Autumnalis (3,5%), Panama (3,3%), Ballum (1,8%), Andamana (1,3%), Hebdomadis (0,9%) e Seranga (0,4%). As titulações variaram de 100 a 3.200, sendo que 77,2% delas ≤ 400. Os fatores associados à presença de ovinos soropositivos a Leptospira spp. foram: criações de subsistência (p=0,000, OR=3,08, IC95%=1,99-4,78) e com finalidade de produção de matrizes e reprodutores (p=0,000, OR=2,19, IC95%=1,46-3,28). As infecções por Leptospira spp. estão ostensivamente presentes nos rebanhos ovinos do estado de Sergipe, sendo necessária a adoção de práticas de manejo adequadas, direcionadas ao controle de roedores e criação consorciada com bovinos que podem levar a contaminação dos alimentos e pastagens.

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Leptospirosis seroprevalence and risk factors for sheep in Maranhão state, Brazil

Cited by 15 publications

References 11 publications

Leptospira spp. infection in sheep herds in southeast Brazil

Leptospira spp. infection in sheep herds in southeast Brazil

Leptospira spp. and Brucella ovis seroprevalence in sheep: preliminary results of one year surveillance program

Inquérito sorológico e fatores de riscos associados a ovinos soropositivos a Leptospira spp. no estado de Sergipe, Brasil

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