Background: The study aims to determine the role of domestic dogs in transmission of visceral leishmaniasis in eastern Sudan. A cross-sectional survey was conducted in 10 villages along the River Rahad in eastern Sudan to elucidate the role of domestic dogs (Canis familiaris, Linnaeus, 1758) as a reservoir host of Leishmania donovani. In this study, 87 dogs were screened for infection by Leishmania donovani. Blood and lymph node samples were taken from 87 and 33 dogs respectively and subsequently screened by the Polymerase Chain Reaction (PCR) and Direct Agglutination Test (DAT) test. Additional lymph node smears were processed for microscopy and parasite culture. Host preference of the visceral leishmaniasis (VL) vector in the area, Phlebotomus orientalis, and other sandflies for the Nile rat (Arvicanthis niloticus, É. Geoffrey, 1803), the genet (Genetta genetta, Linnaeus, 1758), the mongoose (Herpeistes ichneumon, Linnaeus, 1758), and the domestic dog were determined by counting numbers of sand flies attracted to CDC traps that were baited by these animals.
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