ArticleRevista de saude publica2026
Visceral leishmaniasis in a peri-urban area of São Paulo associated with Nyssomyia whitmani.
Article in Revista de saude publica, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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Abstract
objectiveTo investigate an outbreak of canine visceral leishmaniasis and the circulation of Leishmania in phlebotomine species in a peri-urban area in the municipality of São Paulo.
methodsTwelve dogs were assessed for Leishmania infection and sandflies were collected using Shannon and CDC light traps. The presence of the parasite in the captured female sandflies was analyzed by molecular method.
resultsOf the dogs analyzed, four were seropositive both in the rapid serological test and by ELISA for Le. infantum. Among the 8,354 phlebotomines captured, Nyssomyia whitmani predominated in the area (98.2%) and DNA from Le. infantum and Le. braziliensis was detected in females of this species, indicating potential participation in the transmission cycle of the visceral leishmaniasis agent.
conclusionThe findings of this study demonstrate the occurrence of an outbreak of canine visceral leishmaniasis in the Perus district, in the municipality of São Paulo, characterized by the presence of dogs infected with Le. infantum and potential transmission associated with the phlebotomine Ny. whitmani. It also reinforces the importance of entomological surveillance of susceptible vectors and the integration of information in a one health approach, with a view to the early detection of potential transmission foci.
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