The use of permethrin-impregnated bednets for malaria control in coastal Tanzania: preliminary entomological impact on vectors
A community-based malaria control programme, using permethrin-impregnated mosquito nets (IMNs) was carried out in the Bagamoyo District, coastal Tanzania. One of the aims of the programme was to determine whether sufficient protection could be achieved to reduce malaria transmission. We report on th...
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| Veröffentlicht in: | African entomology 1999-09, Vol.7 (2), p.233-242 |
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| container_title | African entomology |
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| creator | Temu, E.A. (South African Medical Research Inst., Johannesburg (South Africa). Medical Entomology) Minjas, J.N Premji, Z Hunt, R.H Shiff, C.J |
| description | A community-based malaria control programme, using permethrin-impregnated mosquito nets (IMNs) was carried out in the Bagamoyo District, coastal Tanzania. One of the aims of the programme was to determine whether sufficient protection could be achieved to reduce malaria transmission. We report on the relevant entomological aspects before and after intervention. The study was conducted in an area with high malaria transmission, with estimated entomological inoculation rates (EIR) of 300 infective bites per person per annum. After two and a half years of using IMNs, mosquito densities were not affected but there was a significant reduction in enzyme linked immunosorbent assay (ELISA) sporozoite rates. This led to a reduction of the EIR by 76% in intervention villages and is mainly due to individual protection. Reduction in EIR was 86% for Anopheles funestus Giles (Diptera: Culicidae) compared to 66% for An.gambiae s.l.Giles (P |
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(South African Medical Research Inst., Johannesburg (South Africa). Medical Entomology) ; Minjas, J.N ; Premji, Z ; Hunt, R.H ; Shiff, C.J</creator><creatorcontrib>Temu, E.A. (South African Medical Research Inst., Johannesburg (South Africa). Medical Entomology) ; Minjas, J.N ; Premji, Z ; Hunt, R.H ; Shiff, C.J</creatorcontrib><description>A community-based malaria control programme, using permethrin-impregnated mosquito nets (IMNs) was carried out in the Bagamoyo District, coastal Tanzania. One of the aims of the programme was to determine whether sufficient protection could be achieved to reduce malaria transmission. We report on the relevant entomological aspects before and after intervention. The study was conducted in an area with high malaria transmission, with estimated entomological inoculation rates (EIR) of 300 infective bites per person per annum. After two and a half years of using IMNs, mosquito densities were not affected but there was a significant reduction in enzyme linked immunosorbent assay (ELISA) sporozoite rates. This led to a reduction of the EIR by 76% in intervention villages and is mainly due to individual protection. Reduction in EIR was 86% for Anopheles funestus Giles (Diptera: Culicidae) compared to 66% for An.gambiae s.l.Giles (P <0.001). However, unprotected communities are still at risk from malaria. 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After two and a half years of using IMNs, mosquito densities were not affected but there was a significant reduction in enzyme linked immunosorbent assay (ELISA) sporozoite rates. This led to a reduction of the EIR by 76% in intervention villages and is mainly due to individual protection. Reduction in EIR was 86% for Anopheles funestus Giles (Diptera: Culicidae) compared to 66% for An.gambiae s.l.Giles (P <0.001). However, unprotected communities are still at risk from malaria. To realize optimum community protection against malaria, extra effort should be made to maximize net coverage in the community, encourage net use throughout the year and ensure regular and timely re-impregnation of mosquito nets.</description><subject>ANOPHELES</subject><subject>Anopheles funestus</subject><subject>Anopheles gambiae</subject><subject>Biological and medical sciences</subject><subject>CONTROL DE PLAGAS</subject><subject>Culicidae</subject><subject>Fundamental and applied biological sciences. 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Psychology</topic><topic>INOCULACION</topic><topic>INOCULATION</topic><topic>LUTTE ANTIRAVAGEUR</topic><topic>MALARIA</topic><topic>Medically important nuisances and vectors, pests of stored products and materials: population survey and control</topic><topic>PERMETHRIN</topic><topic>PERMETHRINE</topic><topic>PERMETRINA</topic><topic>PEST CONTROL</topic><topic>TANZANIA</topic><topic>TANZANIE</topic><topic>Vectors. Intermediate hosts</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Temu, E.A. (South African Medical Research Inst., Johannesburg (South Africa). Medical Entomology)</creatorcontrib><creatorcontrib>Minjas, J.N</creatorcontrib><creatorcontrib>Premji, Z</creatorcontrib><creatorcontrib>Hunt, R.H</creatorcontrib><creatorcontrib>Shiff, C.J</creatorcontrib><collection>AGRIS</collection><collection>Pascal-Francis</collection><collection>Entomology Abstracts (Full archive)</collection><jtitle>African entomology</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Temu, E.A. (South African Medical Research Inst., Johannesburg (South Africa). 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The study was conducted in an area with high malaria transmission, with estimated entomological inoculation rates (EIR) of 300 infective bites per person per annum. After two and a half years of using IMNs, mosquito densities were not affected but there was a significant reduction in enzyme linked immunosorbent assay (ELISA) sporozoite rates. This led to a reduction of the EIR by 76% in intervention villages and is mainly due to individual protection. Reduction in EIR was 86% for Anopheles funestus Giles (Diptera: Culicidae) compared to 66% for An.gambiae s.l.Giles (P <0.001). However, unprotected communities are still at risk from malaria. To realize optimum community protection against malaria, extra effort should be made to maximize net coverage in the community, encourage net use throughout the year and ensure regular and timely re-impregnation of mosquito nets.</abstract><cop>Pretoria</cop><pub>Entomological Society of Southern Africa</pub><tpages>10</tpages></addata></record> |
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| ispartof | African entomology, 1999-09, Vol.7 (2), p.233-242 |
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| language | eng |
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| source | Elektronische Zeitschriftenbibliothek - Frei zugängliche E-Journals |
| subjects | ANOPHELES Anopheles funestus Anopheles gambiae Biological and medical sciences CONTROL DE PLAGAS Culicidae Fundamental and applied biological sciences. Psychology INOCULACION INOCULATION LUTTE ANTIRAVAGEUR MALARIA Medically important nuisances and vectors, pests of stored products and materials: population survey and control PERMETHRIN PERMETHRINE PERMETRINA PEST CONTROL TANZANIA TANZANIE Vectors. Intermediate hosts |
| title | The use of permethrin-impregnated bednets for malaria control in coastal Tanzania: preliminary entomological impact on vectors |
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