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Res Vet Sci ; 94(3): 584-6, 2013 Jun.
Artigo em Inglês | MEDLINE | ID: mdl-23200513


This study was aimed at determining the prevalence of anti-Neospora caninum antibodies in serum samples from 667 goats, collected from 90 herds in 90 municipalities in eight of the twelve mesoregions of Minas Gerais State. The presence of anti-N. caninum antibodies was determined by IFAT with a cut-off value of 1:50. The true herd-level seroprevalence in the entire study area was 75.2% (CI 95%: 59.5-90.9%). The true individual-level seroprevalence in the entire study area was 10.7% (CI 95%: 8.3-13.4%) with titers ranging from 50 (50.5%) to 3200 (1.7%). The serological evidence from this study indicated that N. caninum infection is widely distributed among goat-rearing herds in Minas Gerais and further studies are needed in order to evaluate the impact of this parasite as a cause of reproductive disorders.

Coccidiose/veterinária , Doenças das Cabras/epidemiologia , Neospora , Animais , Brasil/epidemiologia , Coccidiose/epidemiologia , Coccidiose/parasitologia , Feminino , Doenças das Cabras/parasitologia , Cabras/parasitologia , Masculino , Estudos Soroepidemiológicos
Rev Bras Parasitol Vet ; 21(2): 161-4, 2012.
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.

Anticorpos Antiprotozoários/sangue , Cães/sangue , Neospora/imunologia , Animais , Brasil , Feminino , Masculino , Fatores de Risco , Saúde da População Rural