A cross-sectional serological study on cattle less than 2 years old, using an antigen ELISA for the detection of bovine cysticercosis was carried out between November 2009 and February 2010 in 10 slaughterhouses from the Catalonia region (North-Eastern Spain). Circulating antigen was detected in 23 of 2073 animals, i.e. a sero-prevalence of 1.11% (CI95%: 0.76-1.75%). The determined sero-prevalence was about 50 times higher than the prevalence obtained by visual inspection within the same period: 19 positive animals of 90,891 slaughtered animals (0.02%) in the same slaughterhouses. None of the animals with positive result in the Ag-ELISA was detected by meat inspection.
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