One piece of the puzzle: Modeling vector presence and environment reveals seasonality, distribution, and prevalence of sandflies and Leishmania in an expansion area

Thomaz-Soccol, Vanete; Gonçalves, André Luiz; Baggio, Rafael Antunes; Bisetto Jr., Alceu; Celestino, Adão; Hospinal-Santiani, Manuel; de Souza, André; Michaliszyn, Mario Sergio; Borges, Marcelo Eduardo; Piechnik, Cláudio Adriano

doi:10.1016/j.onehlt.2023.100581

Cited by 2 publications

(1 citation statement)

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“…Moreover, its role in transmitting Le . infantum is also suspected, as molecular detections have identified this parasite in the states of Paraná [ 38 ], Santa Catarina [ 39 ], and MG in the Southeast Region of the country [ 40 ].…”

Section: Discussionmentioning

confidence: 99%

Diversity, Leishmania detection, and blood meal sources of sand flies from Iguatama, Minas Gerais, Brazil

Dutra-Rêgo,

Binder,

Capucci

et al. 2024

PLoS ONE

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This study investigated the sand fly fauna of the municipality Iguatama, in the Midwest Region of Minas Gerais state, Brazil, including Leishmania infection rates and blood meal sources. Sand flies were collected during four periods over the course of a single year, encompassing both dry and rainy seasons, using CDC light traps placed in peridomiciles where dogs were seropositive for visceral leishmaniasis (VL). A total of 762 sand fly specimens, representing 12 species across seven genera, were collected. Lutzomyia longipalpis was the most abundant species, comprising 57.6% of the collected specimens, followed by Nyssomyia neivai (19.6%) and Nyssomyia whitmani (10.5%). Species richness and diversity varied among collection periods, with the highest diversity observed in January 2019. Molecular analysis detected Leishmania DNA in 12.5% of the sand fly specimens, with Le. infantum being the predominant species. Blood meal analysis revealed feeding on multiple vertebrate species, including humans, rats, dogs, and chickens. The presence of Leishmania DNA in sand flies, and the identification of human blood meals, highlight the potential role of these species in VL transmission. These findings underscore the importance of continued surveillance and control measures to prevent the spread of VL and reduce transmission risk in the region.

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Section: Discussionmentioning

confidence: 99%