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Seasonality of sand flies (Diptera: Psychodidae) and Leishmania DNA detection in vector species in an area with endemic visceral leishmaniasis
Saraiva, Lara; Leite, Camila Gonçalves; Lima, Ana Cristina Vianna Mariano da Rocha; Carvalho, Luiz Otávio Alves de; Pereira, Agnes Antônia Sampaio; Rugani, Jerônimo Marteleto Nunes; Rego, Felipe Dutra; Gontijo, Célia Maria Ferreira; Andrade Filho, José Dilermando.
  • Saraiva, Lara; Fundação Oswaldo Cruz-Fiocruz. Centro de Pesquisas René Rachou. Belo Horizonte. BR
  • Leite, Camila Gonçalves; Fundação Oswaldo Cruz-Fiocruz. Centro de Pesquisas René Rachou. Belo Horizonte. BR
  • Lima, Ana Cristina Vianna Mariano da Rocha; Fundação Oswaldo Cruz-Fiocruz. Centro de Pesquisas René Rachou. Belo Horizonte. BR
  • Carvalho, Luiz Otávio Alves de; Fundação Oswaldo Cruz-Fiocruz. Centro de Pesquisas René Rachou. Belo Horizonte. BR
  • Pereira, Agnes Antônia Sampaio; Fundação Oswaldo Cruz-Fiocruz. Centro de Pesquisas René Rachou. Belo Horizonte. BR
  • Rugani, Jerônimo Marteleto Nunes; Fundação Oswaldo Cruz-Fiocruz. Centro de Pesquisas René Rachou. Belo Horizonte. BR
  • Rego, Felipe Dutra; Fundação Oswaldo Cruz-Fiocruz. Centro de Pesquisas René Rachou. Belo Horizonte. BR
  • Gontijo, Célia Maria Ferreira; Fundação Oswaldo Cruz-Fiocruz. Centro de Pesquisas René Rachou. Belo Horizonte. BR
  • Andrade Filho, José Dilermando; Fundação Oswaldo Cruz-Fiocruz. Centro de Pesquisas René Rachou. Belo Horizonte. BR
Mem. Inst. Oswaldo Cruz ; 112(4): 309-318, Apr. 2017. tab, graf
Article in English | LILACS | ID: biblio-841787
ABSTRACT
BACKGROUND Leishmaniases are a serious health problem in southeast Brazil, including the city of Belo Horizonte (BH), Minas Gerais state (MG), where there are high rates of incidence and mortality due to visceral leishmaniases. BH is divided into nine sanitary districts (SD) of which one, the Venda Nova SD, was selected for this study because it has high rates of positivity for canine leishmaniasis and high incidence of human leishmaniasis. OBJECTIVES This study aimed to survey the sand fly fauna in Venda Nova SD from August 2011 to July 2013 and perform a descriptive analysis of the vector population. METHODS The sampling was carried out using automatic HP light traps at all covered areas of the Venda Nova SD, in a total of eighteen light traps. Sampled specimens were identified following Galati (2003), and females were submitted to molecular techniques for the detection and identification of Leishmania DNA. A simple environmental description was done for it area and Kernel estimation was used to infer vector density for each study site. FINDINGS A total of 2,427 sand fly specimens belonging to eight species and five genera were collected of which 95.3% were Lutzomyia longipalpis. The seasonal variation curve was delineated by this species. Lu. longipalpis was the most abundant at all collection points and in all months of the study, and exhibited a natural infection rate of 1.01% for Leishmania infantum and 1.77% for Leishmania braziliensis. MAIN CONCLUSIONS The results show the presence and adaptation of Lu. longipalpis to the anthropic environment of BH and reinforces its role as the main vector of L. infantum in the region.
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Full text: Available Index: LILACS (Americas) Main subject: Psychodidae / Leishmaniasis / DNA, Protozoan / Insect Vectors / Leishmania Type of study: Diagnostic study / Prognostic study Limits: Animals / Female / Humans / Male Country/Region as subject: South America / Brazil Language: English Journal: Mem. Inst. Oswaldo Cruz Journal subject: Tropical Medicine / Parasitology Year: 2017 Type: Article Affiliation country: Brazil Institution/Affiliation country: Fundação Oswaldo Cruz-Fiocruz/BR

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Full text: Available Index: LILACS (Americas) Main subject: Psychodidae / Leishmaniasis / DNA, Protozoan / Insect Vectors / Leishmania Type of study: Diagnostic study / Prognostic study Limits: Animals / Female / Humans / Male Country/Region as subject: South America / Brazil Language: English Journal: Mem. Inst. Oswaldo Cruz Journal subject: Tropical Medicine / Parasitology Year: 2017 Type: Article Affiliation country: Brazil Institution/Affiliation country: Fundação Oswaldo Cruz-Fiocruz/BR