Abundance of Lutzomyia longipalpis in urban households as risk factor of transmission of visceral leishmaniasis
Urban occurrence of human and canine visceral leishmaniasis (VL) is linked to households with characteristics conducive to the presence of sand flies. This study proposes an ad hoc classification of households according to the environmental characteristics of receptivity to phlebotominae and an ento...
| Main Authors: | , , , , , , |
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| Format: | Article |
| Language: | English |
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Fundação Oswaldo Cruz (FIOCRUZ)
2016-05-01
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| Series: | Memorias do Instituto Oswaldo Cruz |
| Subjects: | |
| Online Access: | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0074-02762016000500302&lng=en&tlng=en |
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| author | Elisa Neves Vianna Maria Helena Franco Morais Andréa Sobral de Almeida Paulo Chagastelles Sabroza Ilka Afonso Reis Edelberto Santos Dias Mariângela Carneiro |
| author_facet | Elisa Neves Vianna Maria Helena Franco Morais Andréa Sobral de Almeida Paulo Chagastelles Sabroza Ilka Afonso Reis Edelberto Santos Dias Mariângela Carneiro |
| author_sort | Elisa Neves Vianna |
| collection | DOAJ |
| description | Urban occurrence of human and canine visceral leishmaniasis (VL) is linked to households with characteristics conducive to the presence of sand flies. This study proposes an ad hoc classification of households according to the environmental characteristics of receptivity to phlebotominae and an entomological study to validate the proposal. Here we describe the phlebotominae population found in intra- and peridomiciliary environments and analyse the spatiotemporal distribution of the VL vector Lutzomyia longipalpis of households receptive to VL. In the region, 153 households were classified into levels of receptivity to VL followed by entomological surveys in 40 of those properties. Kruskal-Wallis verified the relationship between the households’ classification and sand fly abundance and Kernel analysis evaluated L. longipalpis spatial distribution: of the 740 sand flies were captured, 91% were L. longipalpis; 82% were found peridomiciliary whilst the remaining 18% were found intradomiciliary. No statistically significant association was found between sandflies and households levels. L. longipalpis counts were concentrated in areas of high vulnerability and some specific households were responsible for the persistence of the infestation. L. longipalpis prevails over other sand fly species for urban VL transmission. The entomological study may help target the surveillance and vector control strategies to domiciles initiating and/or maintaining VL outbreaks. |
| first_indexed | 2024-03-12T09:32:31Z |
| format | Article |
| id | doaj.art-bef7ca0add704bc999fd75f42b06e73e |
| institution | Directory Open Access Journal |
| issn | 1678-8060 |
| language | English |
| last_indexed | 2024-03-12T09:32:31Z |
| publishDate | 2016-05-01 |
| publisher | Fundação Oswaldo Cruz (FIOCRUZ) |
| record_format | Article |
| series | Memorias do Instituto Oswaldo Cruz |
| spelling | doaj.art-bef7ca0add704bc999fd75f42b06e73e2023-09-02T13:53:44ZengFundação Oswaldo Cruz (FIOCRUZ)Memorias do Instituto Oswaldo Cruz1678-80602016-05-01111530231010.1590/0074-02760150366S0074-02762016000500302Abundance of Lutzomyia longipalpis in urban households as risk factor of transmission of visceral leishmaniasisElisa Neves ViannaMaria Helena Franco MoraisAndréa Sobral de AlmeidaPaulo Chagastelles SabrozaIlka Afonso ReisEdelberto Santos DiasMariângela CarneiroUrban occurrence of human and canine visceral leishmaniasis (VL) is linked to households with characteristics conducive to the presence of sand flies. This study proposes an ad hoc classification of households according to the environmental characteristics of receptivity to phlebotominae and an entomological study to validate the proposal. Here we describe the phlebotominae population found in intra- and peridomiciliary environments and analyse the spatiotemporal distribution of the VL vector Lutzomyia longipalpis of households receptive to VL. In the region, 153 households were classified into levels of receptivity to VL followed by entomological surveys in 40 of those properties. Kruskal-Wallis verified the relationship between the households’ classification and sand fly abundance and Kernel analysis evaluated L. longipalpis spatial distribution: of the 740 sand flies were captured, 91% were L. longipalpis; 82% were found peridomiciliary whilst the remaining 18% were found intradomiciliary. No statistically significant association was found between sandflies and households levels. L. longipalpis counts were concentrated in areas of high vulnerability and some specific households were responsible for the persistence of the infestation. L. longipalpis prevails over other sand fly species for urban VL transmission. The entomological study may help target the surveillance and vector control strategies to domiciles initiating and/or maintaining VL outbreaks.http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0074-02762016000500302&lng=en&tlng=enLutzomyia longipalpishousehold characteristicsvisceral leishmaniasis |
| spellingShingle | Elisa Neves Vianna Maria Helena Franco Morais Andréa Sobral de Almeida Paulo Chagastelles Sabroza Ilka Afonso Reis Edelberto Santos Dias Mariângela Carneiro Abundance of Lutzomyia longipalpis in urban households as risk factor of transmission of visceral leishmaniasis Memorias do Instituto Oswaldo Cruz Lutzomyia longipalpis household characteristics visceral leishmaniasis |
| title | Abundance of Lutzomyia longipalpis in urban households as risk factor of transmission of visceral leishmaniasis |
| title_full | Abundance of Lutzomyia longipalpis in urban households as risk factor of transmission of visceral leishmaniasis |
| title_fullStr | Abundance of Lutzomyia longipalpis in urban households as risk factor of transmission of visceral leishmaniasis |
| title_full_unstemmed | Abundance of Lutzomyia longipalpis in urban households as risk factor of transmission of visceral leishmaniasis |
| title_short | Abundance of Lutzomyia longipalpis in urban households as risk factor of transmission of visceral leishmaniasis |
| title_sort | abundance of lutzomyia longipalpis in urban households as risk factor of transmission of visceral leishmaniasis |
| topic | Lutzomyia longipalpis household characteristics visceral leishmaniasis |
| url | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0074-02762016000500302&lng=en&tlng=en |
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