Seroprevalence of Bluetongue and associated risk factors in Costa Rican sheep flocks

 

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Detalles Bibliográficos
Autores: Dolz, Gaby, Villagra-Blanco, Rodolfo, Montero-Caballero, Danilo, Romero-Zúñiga, Juan José
Formato: artículo
Fecha de Publicación:2015
Descripción:A total of 359 sheep samples from 15 farms were analyzed for the presence of antibodies against bluetongue virus (BTV) by commercial enzyme-linked immunosorbent assay (ELISA). Antibodies were detected in 290 sheep from fourteen different flocks, distributed in all analyzed regions (Central, Chorotega, Atlantic Huetar, North Huetar, and Central Pacific) determining regional seropositivity between 63.5% and 100.0%, as well as an overall prevalence of 80.8 %. The within flock seropositivity percentages ranged between 28.6% and 100.0%. Two management practices were determined as risk factors for BTV seropositivity: buying animals, embryos, or semen from other farms without any sanitary control (59.1% of the participating farms, OR= 2.54; IC= 1.49 to 4.35), and the lack of quarantine areas or separated boxes for sick animals in each flock (70.47% of the studied flocks, OR= 6.47; IC= 3.68 to 11.40). All seronegative individuals (19.2%) came from flocks that used partial stabling, indicating this management practice as a protective factor (OR= 1.10; IC= 1.06 to 1.14) for BTV infection. Flocks with the highest seropositivity were found in low altitude regions close to the coast. The results of this study indicate that BTV is endemic in sheep herds from Costa Rica, and animals seem not show clinical signs. Further epidemiological studies are required to determine serotypes present in cattle, wild and small ruminants.
País:Repositorio UNA
Institución:Universidad Nacional de Costa Rica
Repositorio:Repositorio UNA
Lenguaje:Inglés
OAI Identifier:oai:https://repositorio.una.ac.cr:11056/17832
Acceso en línea:http://hdl.handle.net/11056/17832
http://dx.doi.org/10.17582/journal.bjv/2015.2.5.74.79
Access Level:acceso abierto
Palabra clave:OVEJAS
VIROSIS
ENFERMEDADES TRANSMISIBLES
DIAGNOSTICO (MEDICINA VETERINARIA)
RISK FACTORS
COSTA RICA
SMALL RUMINANTS
ORBIVIRUS