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Determinación de la seroprevalencia de Leptospira spp. y los principales serovares circulantes en el ganado bovino en la provincia de Manabí, Ecuador

2020; World Organisation for Animal Health; Volume: 38; Issue: 3 Linguagem: Inglês

10.20506/rst.38.3.3026

1608-0653

Dia D, Miguel Pérez Ruano, Chongfa Cai, Marina Dalia Zambrano Aguayo, H. P. SANDOVAL VALENCIA H., Mercy Alexandra Falconí Flores, Lino Vera Loor, A. P. REVELO RUALES A., Osvaldo Fonseca‐Rodríguez,

Leptospirosis research and findings

Leptospirosis is a transmissible zoonotic disease caused by pathogenic strains of the genus Leptospira. Clinical signs in cattle are fever, haematuria, haemoglobinuria, meningitis, abortion, birth of weak calves and infertility; in the most severe cases, it can cause death to the animal. The few studies conducted in Ecuador, and in particular the province of Manabí, have revealed varying prevalence rates, ranging from 35.8% to 75%. The objective of this study is to determine the seroprevalence of leptospirosis in cattle and to ascertain the main serovars circulating in the province of Manabí. A cross-sectional epidemiological study was conducted from November 2015 to March 2016, for which seven cantons were selected at random and a total of 854 animals from 67 herds were investigated. The samples were processed in the laboratories of the Animal Diagnostics Directorate of the Ecuadorian Agency for Agriculture Quality Assurance (AGROCALIDAD) in Tumbaco, using the microscopic agglutination test. The sera were analysed to check whether they contained any of the eight serovars of Leptospira interrogans circulating most frequently in the country: Canicola, Hardjo, Pomona, Icterohaemorrhagiae, Grippotyphosa, Wolffi, Bratislava and Copenhageni. Overall seroprevalence at herd level was 97.01%, with the most common serovars being Pomona, Icterohaemorrhagiae, Grippotyphosa, Bratislava and Canicola. It was concluded that there is high seroprevalence at herd level in the province of Manabí.