title: Leptospirosis seroprevalence and risk factors for sheep in Maranhão state, Brazil.
abstract: This study was conducted to determine leptospirosis seroprevalence in sheep and their spatial distribution as well as identify risk factors associated with seropositivity in sheep from 37 herds and 11 municipalities in the Presidente Dutra microregion, Maranhão state, Brazil. We analyzed 379 blood serum samples using a Microscopic Agglutination Test (MAT). The individual seroprevalence was 32%. Of the 37 herds studied, 30 (81%, 95% CI 69-94%) had at least one seropositive animal. In seven municipalities, we observed infection in 100% of the herds. The serovars recorded were Grippotyphosa (67%), Wollfi with Hardjo (9%), Bratislava (9%), Hardjo (5%), Icterohaemorrhagiae (5%), Pomona (2%), Castellonis (2%) and Copenhageni (0.8%). We concluded that the Leptospira spp. in sheep is widespread in the area of sheep farms in Maranhão state, and a risk factor is the animals' water source.
authors: Agência Estadual de Defesa Agropecuária do Maranhão, 65076-090, São Luís, Maranhão, Brazil.
authors: Sônia Maria
authors: SM
authors: de Carvalho
authors: Ana Lys B B
authors: AL
authors: Mineiro
authors: Vanessa
authors: V
authors: Castro
authors: Margareth E
authors: ME
authors: Genovez
authors: Sérgio Santos
authors: SS
authors: Azevedo
authors: Francisco A L
authors: FA
authors: Costa
mesh_terms: D000372:Agglutination Tests / Q000662:veterinary; D000818:Animals; D000907:Antibodies, Bacterial / Q000097:blood; D001938:Brazil / Q000453:epidemiology; D007919:Leptospira / Q000302:isolation & purification*; D007922:Leptospirosis / Q000097:blood / Q000453:epidemiology / Q000662:veterinary*; D012307:Risk Factors; D016036:Seroepidemiologic Studies; D012756:Sheep; D012757:Sheep Diseases / Q000453:epidemiology / Q000382:microbiology*
chemical_list: D000907:Antibodies, Bacterial