In this paper, we develop a mathematical model to study the transmission dynamics of visceral leishmaniasis. Three populations: dogs, sandflies and humans, are considered in the model. Based on recent studies, we include vertical transmission of dogs in the spread of the disease. We also investigate the impact of asymptomatic humans and dogs as secondary reservoirs of the parasites. The basic r...

in this study, we used random amplified polymorphic dna (rapd) for identification of 17 isolates of leishmania from the skin and reticuloendothelial system of humans, animal reservoirs (rodent and dog) and sandflies in various parts of iran in the last decade. fifteen species have been confirmed by isoenzyme characterization by the london school of hygiene and tropical medicine and shiraz unive...

The phlebotomine sandflies of the province of Chaco, Argentina, are poorly known, with reports from more than 40 years or captures related with outbreaks of leishmaniasis. In here, Mycropygomyia peresi (Mangabeira) is reported for the first time in Argentina, extending the known dstribution of Migonemyia migonei (França), Evandromyia sallesi (Galvão & Coutinho), Mycropygomyia quinquefer (Dyar),...

Phlebotomine sandflies of the genus Sergentomyia are widely distributed throughout the Old World. It has been suggested that Sergentomyia spp are involved in the transmission of Leishmania in India and Africa, whereas Phlebotomus spp are thought to be the sole vectors of Leishmania in the Old World. In this study, Leishmania major DNA was detected in one Sergentomyia minuta specimen that was co...

There are many published paper regarding roles of Sergentomyia genus in the transmission of infectious diseases in the different countries. Maleh area of Shoush County, south-west of Iran was studied from point of Sergentomyia faunestic in this research project. In the current research study 6 species of Sergentomyia were recognized of 486 collected sand flies. Therefore, it is concluded that f...

This study reports the distribution, ecotopes and fauna diversity of sandflies captured in five training bases on a military reserve in Manaus, state of Amazonas (AM). A total of 10,762 specimens were collected, which were distributed among 58 species, with the highest number recorded at Base Instruction 1 (BI1). A higher rate of species richness was found at the Base Instruction Boina Rajada a...

The fluid mechanics of blood flow in the pharynx and cibarium of Phlebotomus papatasi are described using a simple static model. The flow is characterized as viscous laminar. The Hagen-Poiseuille equation is used to assess the effects of attached parasites in the foregut of Leishmania-infected sandflies on blood flow. The reductions in flow rate imposed by parasite colonization of the pharynx a...