Authors: Luis Rodrigo Saa Anselmo Perea Diego Vinicio Jara Antonio José Arenas Ignacio GarciaBocanegra Carmen Borge Alfonso Carbonero
Publish Date: 2012/01/24
Volume: 44, Issue: 7, Pages: 1423-1427
Abstract
A crosssectional study was carried out to determine the seroprevalence and risk factors associated with bovine respiratory syncytial virus BRSV infection in nonvaccinated dairy and dualpurpose cattle herds from Ecuador A total of 2367 serum samples from 346 herds were collected from June 2008 to February 2009 A questionnaire which included variables related to cattle health management measures and the environment was filled out in each herd Presence of antibodies against BRSV was analyzed using a commercial indirect ELISA test A logistic regression model was used to determine risk factors associated with BRSV at herd level The individual seroprevalence against BRSV in nonvaccinated herds in Ecuador was 8048 1905/2367 95 confidence interval CI = 789–821 The herd prevalence was 913 316/346 95 CI = 883–943 and the intraherd prevalence ranged between 25 and 100 mean 9047 The logistic regression model showed that the existence of bordering cattle farms the dualpurpose farms and the altitude of the farm more than 2338 m above sea level were risk factors associated with BRSV infection This is the first study about BRSV prevalence in Ecuador It shows the wide spread of the BRSV infection in the country The risk factors found will help to design effective control strategies
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