Navegando por Autor "Dietze, Reynaldo"
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Item Canine visceral leishmaniasis : performance of a rapid diagnostic test (Kalazar Detect TM ) in dogs with and without signs of the disease.(2008) Lemos, Elenice Moreira; Laurenti, Marcia Dalastra; Moreira, Márcio Antônio Batistela; Reis, Alexandre Barbosa; Giunchetti, Rodolfo Cordeiro; Raychaudhuri, Syamal; Dietze, ReynaldoCurrent visceral leishmaniasis (VL) control programs in Brazil include the infected dog elimination but, despite this strategy, the incidence of human VL is still increasing. One of the reasons is the long delay between sample collection, analysis, control implementation and the low sensitivity of diagnostic tests. Due to the high prevalence of asymptomatic dogs, the diagnosis of these animals is important considering their vector infection capacity. Hence, a rapid and accurate diagnosis of canine visceral leishmaniasis is essential for an efficient surveillance program. In this study we evaluated the performance of rK39 antigen in an immunochromatographic format to detect symptomatic and asymptomatic Leishmania chagasi infection in dogs and compared the results with those using a crude antigen ELISA. The sensitivity of rK39 dipstick and ELISA were 83% vs. 95%, respectively, while the specificity was both 100%. Our results also demonstrated that the dipstick test was able to detect infected dogs presenting different clinical forms.Item First description of autochthonous canine visceral leishmaniasis in the metropolitan region of Vitória, State of Espírito Santo, Brazil.(2012) Tonini, Marco André Loureiro; Lemos, Elenice Moreira; Reis, Alexandre Barbosa; Vital, Wendel Coura; Dias, Edelberto Santos; Dietze, ReynaldoIntroduction: We investigated autochthonous canine visceral leishmaniasis (CVL) in the metropolitan region of Vitória (MRV), an area in which a human case was previously reported. Methods: Serological, parasitological, and molecular tests were performed in 201 dogs. Results: Twenty-six (13%) and 12 (6%) dogs were identified as positive using in-house enzyme-linked immunosorbent assay (ELISA) and rK39 tests, respectively. Two dogs had a positive culture for Leishmania chagasi, and 4 were polymerase chain reaction (PCR)-positive for Leishmania spp. One positive dog belonged to the aforementioned patient. Conclusions: Although the responsible vector was not found, our results provide evidence of autochthonous CVL in the MRV, a non-endemic area for VL.