Abstract
The aim of this survey was to identify spatial clustering of bovine cysticercosis-positive herds in the state of Paraíba. The state was divided into three sampling groups: sampling stratum 1 (Sertão mesoregion), sampling stratum 2 (Borborema mesoregion) and sampling stratum 3 (Zona da Mata and Agreste mesoregions), and 2382 cows aging ≥ 24 months from 474 farms were sampled. Serological diagnoses of bovine cysticercosis were initially done by means of indirect ELISA, and positive serum samples were confirmed by a immunoblot test. Herds were deemed positive for cysticercosis if they presented at least one positive animal in herds of up to 29 females, and two positive animals in herds with more than 29 females. The spatial clustering was assessed using the Cuzick-Edwards k-nearest neighbor method and spatial scan statistics. A significant clustering of positive herds was detected in the southern part of the Borborema mesoregion. Given that serological tests for bovine cysticercosis are not widely available, and also that replacement and maintenance of herds through animal purchases is common in the region, it can be concluded that prevention measures should be applied at herd level.
Highlights
Bovine cysticercosis is a tropical zoonotic disease caused by the larval stage of Taenia saginata in cattle
Postmortem inspection has been used as a control measure and it indicates the degree of bovine cysticercosis infection
The herd-level prevalence found in the State of Paraíba, especially in the Agreste/Zona da Mata and Sertão mesoregions, where herd-level prevalences were 13.8% and 10.3%, respectively, indicate that bovine cysticercosis is spread in cattle herds in the region
Summary
Bovine cysticercosis is a tropical zoonotic disease caused by the larval stage of Taenia saginata in cattle. No surveys involving herd-level spatial clustering analysis on bovine cysticercosis seroprevalence in Brazil have been conducted.
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