期刊
REVISTA BRASILEIRA DE PARASITOLOGIA VETERINARIA
卷 24, 期 1, 页码 52-58出版社
BRAZILIAN COLL VETERINARY PARASITOLOGY
DOI: 10.1590/S1984-29612015011
关键词
Ehrlichia; Babesia; Hepatozoon; dogs; Northeastern Brazil
资金
- National Council for Scientific and Technological Development (CNPq)
This study assessed the occurrence of Ehrlichia spp., Babesia spp. and Hepatozoon spp. infections in 100 tick-harboring dogs from a semiarid region of the State of Paraiba, Northeastern Brazil. Blood samples and ticks were collected from the animals, and a questionnaire was submitted to dog owners to obtain general data. Blood samples were used to perform hemogram, direct blood smear and immunological and molecular hemoparasite detection. The 1,151 ticks collected were identified as Rhipicephalus sanguineus; direct smears revealed Ehrlichia canis-like morulae in the monocytes of 4% (4/100) of the non-vaccinated female dogs, and 34% and 25% of the dogs tested positive for Ehrlichia canis by indirect immunofluorescence assay (IFA) and polymerase chain reaction (PCR), respectively. Blood smear examination revealed Babesia-suggestive merozoites in the erythrocytes of 2% (2/100) of the animals. Babesia vogeli was detected by PCR in ten animals (10%) and was correlated with young age (p = 0.007) and thrombocytopenia (p = 0.01). None of the animals showed Hepatozoon spp. positivity. These results indicate that Ehrlichia canis is the main tick-borne canine pathogen in the study area and provide the first report of Babesia vogeli infection in dogs from Paraiba State.
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