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Occurrence of anti-Neospora caninum antibodies in dogs in rural areas in Minas Gerais, Brazil.

Rev Bras Parasitol Vet; 21(2): 161-4, 2012 Apr-Jun.
Artigo em Inglês | MEDLINE | ID: mdl-22832759
The aim of this study was to determine the frequency of anti-Neospora caninum antibodies and risk factors associated with seropositivity in 240 dogs from rural areas of the Lavras, Belo Horizonte and Nanuque regions, state of Minas Gerais, Brazil. The indirect fluorescence antibody test (IFAT) with a cutoff of 50 was used to assess the frequency of seropositive dogs. The risk factor analysis was performed using the Chi-square test (χ2) and multiple logistic regression. The frequency of seropositivity for N. caninum was 15% of the dogs (36/240). Presence of dogs without defined breed (p = 0.018; OR = 5.9) and presence of cattle on the farm (p = 0.053, OR = 4.3) were associated with N. caninum seropositivity. Dogs in the Nanuque region had higher seropositivity for N. caninum (29.9%) than did those in the Lavras (6.2%) and Belo Horizonte (2.2%) regions (p < 0.05). The presence of seropositive dogs in rural areas of Minas Gerais demonstrates the potential risk of horizontal transmission of N. caninum to cattle, especially from dogs without defined breed, which were four times more likely to be seropositive than purebred dogs were.