| prevalence of ehrlichial infection among dogs and ticks in northeastern brazil. | this study investigated the epidemiology of canine ehrlichiosis in northeastern brazil, focusing the identification of the ehrlichia species and vectors involved. samples were collected from 472 domestic dogs residing in the health districts of cajazeiras and itapuã of salvador city. the average prevalence of antibodies reactive to e. canis by immunofluorescent antibody test (ifat) (titer ≥ 1:80) was 35.6% (168/472). blood samples from the e. canis-seropositive animals were tested by nested pcr ... | 2010 | 20624344 |