Examinando por Materia "Leptospirosis"

Mostrando 1 - 3 de 3
  • Publicación
    Acceso abierto
    Environmental and socioeconomic determinants of leptospirosis incidence in Colombia
    (2019-03-25) Gutiérrez, Juan David; Martínez Vega, Ruth Aralí; Botello, Hector A.; Ruiz Herrera, Freddy Jesús; Arenas López, Laura Carolina; Hernández Tellez, Karen Dayana
  • Publicación
    Restringido
    Presence of IgG antibodies against reproductive infections in breeding bulls of Magdalena Medio, Colombia
    (2015) Camacho M., Rodolfo; Carvajal, Lenny Y.; Castellanos Domínguez, Yeny Zulay; Díaz, Wilson F.; Vásquez de Díaz, María Cristina
    Background: cattle farming is an important economic activity in several regions of Colombia. However, farmers are unaware of their cattle health status, and particularly of bacterial, parasitic, and viral diseases, which affect reproduction and profitability. Objective: to assess the presence of IgG antibodies against infectious bovine rhinotracheitis (IBR), bovine viral diarrhea (BVD), bovine leukosis, leptospirosis, brucellosis, and Neospora caninum in breeding bulls in the Magdalena Medio of Colombia, according to age, breed, and origin. Methods: a descriptive, cross-sectional study was conducted with 174 male breeding cattle from several subspecies. Animals were above 18 months of age and belonged to dual-purpose farms in the Magdalena Medio region. Presence of IgG anti-IBR, BVD, brucellosis, neosporosis, and leukosis antibodies were determined with an enzyme-linked immunosorbent assay (ELISA). A sample of 156 males was assessed for leptospirosis using a microscopic agglutination test (MAT) in a dark field. Results: IgG anti-IBR antibodies were found in 92.5% of the animals, anti-BVD in 62.6%, anti-Neospora caninum in 79.3%, anti-Brucella abortus in 4.02%, anti-Leptospira pomona in 8.33%, and anti-L. hardjo in 15.38%, with >1:100 titres. Besides, 64.94% prevalence was observed for bovine leukosis. Conclusions: a high prevalence of IgG anti-IBR, IgG anti-BVD, IgG antiNeospora caninum, IgG anti-leukosis, and IgG anti-lepstospirosis antibodies were observed in Magdalena Medio bulls. With respect to B. abortus, confirmatory and competitive ELISA test should be performed and sanitary standards need to be established. Detection of IgG antibodies among bulls reveals poor sanitary conditions, absent of protective-vaccination antibodies and an urgent need for health control measurements.
  • Publicación
    Acceso abierto
    Seroprevalence and risk factors for Leptospira spp. in small ruminants of semi-arid zone in northeastern Colombia
    (2021-12-10) Guzman-Barragan, Blanca Lisseth; Martinez-Rodríguez, Lorena Catalina; Tobon-Torreglosa, Julio Cesar; Tafur-Gomez, Gabriel Andres; Ciencia UDES
    Leptospirosis in small ruminants is an economically important disease that causes important losses by pathologies of the reproductive tract. The present study aimed to estimate the seroprevalence and risk factors associated with Leptospira spp. in small ruminants under traditional husbandry systems. A cross-sectional epidemiological study was carried out in a sample of 1039 animals which included 793 sheep and 245 goats from 49 farms of 10 municipalities of northeastern areas of Colombia. The MAT test using a panel of 13 laboratory serovars was performed to diagnose the Leptospira spp. antibodies in the serum samples of animals. A structured questionnaire was filled in each farm to obtain information on putative risk factors, and its association with Leptospira spp. infection was detected by univariate and multivariate logistic regression. The general seroprevalence showed a rate of 13.9%, the 79.6% of farms showed at least one positive animal, the 14.2% and 0.4% of positive animals showed titers ≥ 1:100 and 1:200, respectively. The seroprevalence in sheep and goats showed a rate of 13.1% and 16.2%, respectively. The most common serovars in positive animals were Autumnalis (3.6%), Tarassovi (3.4%), Bratislava (2.9%), Mini (2.9%), Bataviae (1.4%), Canicola (0.3%), and Grippotyphosa (0.3%). The univariate and multivariate analysis showed as risk factors the absence of housing system (OR = 3.412 CI: 1.347–8.152), the absence of quarantine measures to new animals (OR = 1.371 CI: 0.943–1.978), and the protective factor identified was the use of Toggenburg breed (OR = 0.571 CI: 0.249–1.074). This exploratory study showed the Leptospira spp. positive small ruminants located in the northeastern areas of Colombia with titer associated with chronic and subclinical infection.