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The aim of this study was to detect DNA and antibodies anti- Leishmania  spp.,  Neospora caninum  and  Toxoplasma gondii  in captive and free-range crab-eating fox ( Cerdocyon thous ) from northeastern Brazil. Twenty-five crab-eating foxes from different states of northeastern Brazil were sampled by this study. Blood samples were collected by cephalic or jugular vein punctures. The whole blood was submitted to PCR, and the sera samples to the serological analysis as follows: MAT for  T. gondii , NAT for  N. caninum , and ELISA for  L. chagasi . The frequence of antibodies anti- T. gondii  was 50% and 29.41% for free-range and captive wild canids, respectively. The frequence of antibodies anti-N.  caninum  observed by this study was 62.50% and 23.52% for free-range and captive wild canids, respectively. The frequence of antibodies anti- L. chagasi  was 4.0% for captive wild canids. Co-infections cases were identified as follows: one captive wild canid seropositive for  T. gondii  and  L. chagasi  and two free-range animals seropositive for  T. gondii  and  N. caninum . All PCR assays performed were negative for the pathogens analyzed. This study describes the presence of antibodies anti- T. gondii, N. caninum  e  L. chagasi  in wild canids from northeastern Brazil and highlights the necessity of further studies on infectious diseases in free-range and captive wild canids.

acta parasitologica

Molecular and serological investigation of infectious diseases in captive and free-range crab-eating fox ( Cerdocyon thous  – Linnaeus, 1776) from northeastern Brazil