2024-03-29T10:44:42Zhttp://repisalud.isciii.es/oai/requestoai:repisalud.isciii.es:20.500.12105/68562023-02-27T15:24:12Zcom_20.500.12105_2074com_20.500.12105_2052com_20.500.12105_2051com_20.500.12105_2060col_20.500.12105_2075col_20.500.12105_2061
Repisalud
author
Ochando, Jordi
author
Descalzo, Miguel Angel
author
Moreno, Marta
author
Chen, Zhaoguo
author
Nzambo, Sisinio
author
Bobuakasi, Leonardo
author
Buatiche, Jesús N
author
Ondo, Melchor
author
Micha, Francisco
author
Benito, Agustin
funder
Agencia Española de Cooperación Internacional para el Desarrollo
funder
Instituto de Salud Carlos III
2018-12-14T12:42:23Z
2018-12-14T12:42:23Z
2006-03-23
Malar J. 2006; 5:21.
14752875
http://hdl.handle.net/20.500.12105/6856
16556321
10.1186/1475-2875-5-21
1475-2875
Malaria journal
BACKGROUND: Malaria transmission varies from one country to another and there are also local differences in time and space. An important variable when explaining the variability in transmission is the breeding behaviour of the different vector species and the availability of breeding sites. The aim of this study was to determine the geographical variability of certain entomological parameters: human biting rate (HBR), sporozoitic index (SI) for Plasmodium falciparum and entomological inoculation rate (EIR). METHODS: The study was carried out in a small village in the mainland region of Equatorial Guinea. Adult mosquitoes were collected by CDC light traps. Polymerase Chain Reaction was employed to identify the species within the Anopheles gambiae complex and to detect P. falciparum sporozoites. The geographical position of all the dwellings in the village were taken using a global positioning system receiver unit. Data relating to the dwelling, occupants, use of bednets and the mosquitoes collection data were used to generate a geographical information system (GIS). This GIS allowed the minimum distance of the dwellings to the closest water point (potential breeding sites) to be determined. RESULTS: A total of 1,173 anophelines were caught: 279 A. gambiae s.l. (217 A. gambiae s.s. and one Anopheles melas), 777 Anopheles moucheti and 117 Anopheles carnevalei. A. moucheti proved to be the main vector species and was responsible for 52.38 [95% IC: 33.7-71] night infective bites during this period. The highest SI was found in A. carnevalei (24%), even though the HBR was the lowest for this species. A significant association was found between the distance from the dwellings to the closest water point (River Ntem or secondary streams) and the total HBR. CONCLUSION: A clear association has been observed between the distance to potential breeding sites and the variability in the anopheline density, while the other parameters measured do not seem to condition this spatial variability. The application of GIS to the study of vector-transmitted diseases considerably improves the management of the information obtained from field surveys and facilitates the study of the distribution patterns of the vector species.
eng
Spatial variability in the density, distribution and vectorial capacity of anopheline species in a high transmission village (Equatorial Guinea)
journal article
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URL
https://repisalud.isciii.es/bitstream/20.500.12105/6856/1/SpatialVariabilityInThe_2006.pdf
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SpatialVariabilityInThe_2006.pdf
URL
https://repisalud.isciii.es/bitstream/20.500.12105/6856/5/SpatialVariabilityInThe_2006.pdf.txt
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SpatialVariabilityInThe_2006.pdf.txt