Impact of permethrin-treated bednets on malaria transmission by the Anopheles gambiae complex in The Gambia.
Malaria vector mosquitoes belonging to the Anopheles gambiae complex were studied in four hamlets in The Gambia. All inhabitants were given bednets treated either with a placebo (milk) in two hamlets or with the pyrethroid insecticide permethrin (500 mg/m2) in two other hamlets. Malaria transmission...
| Main Authors: | , , , , , |
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| Format: | Journal article |
| Language: | English |
| Published: |
1989
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| _version_ | 1797085390205616128 |
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| author | Lindsay, S Snow, R Broomfield, G Janneh, MS Wirtz, R Greenwood, B |
| author_facet | Lindsay, S Snow, R Broomfield, G Janneh, MS Wirtz, R Greenwood, B |
| author_sort | Lindsay, S |
| collection | OXFORD |
| description | Malaria vector mosquitoes belonging to the Anopheles gambiae complex were studied in four hamlets in The Gambia. All inhabitants were given bednets treated either with a placebo (milk) in two hamlets or with the pyrethroid insecticide permethrin (500 mg/m2) in two other hamlets. Malaria transmission occurred mainly during a few weeks of the rainy season, in September and October 1987. The indoor resting densities of mosquitoes in permethrin-treated hamlets were reduced, and we estimated over 90% reduction in biting on man by An. gambiae Giles sensu stricto in these hamlets. No mosquitoes were found under permethrin-treated bednets compared with eighty-one recovered from placebo-treated bednets. Mosquitoes exited more readily from rooms where permethrin-treated bednets were used than from rooms with placebo-treated nets. The annual mean probability that a child would receive an infective bite was estimated to be 0.09 in hamlets with insecticide-treated bednets, compared with 1.9 where placebo-treated bednets were used. Permethrin-treated bednets are therefore recommended as a means of effectively reducing the risk of exposure to malaria transmission, particularly in areas of low seasonal transmission. |
| first_indexed | 2024-03-07T02:08:19Z |
| format | Journal article |
| id | oxford-uuid:9fbe520f-c137-4006-9c10-d247c8e2513b |
| institution | University of Oxford |
| language | English |
| last_indexed | 2024-03-07T02:08:19Z |
| publishDate | 1989 |
| record_format | dspace |
| spelling | oxford-uuid:9fbe520f-c137-4006-9c10-d247c8e2513b2022-03-27T02:00:09ZImpact of permethrin-treated bednets on malaria transmission by the Anopheles gambiae complex in The Gambia.Journal articlehttp://purl.org/coar/resource_type/c_dcae04bcuuid:9fbe520f-c137-4006-9c10-d247c8e2513bEnglishSymplectic Elements at Oxford1989Lindsay, SSnow, RBroomfield, GJanneh, MSWirtz, RGreenwood, BMalaria vector mosquitoes belonging to the Anopheles gambiae complex were studied in four hamlets in The Gambia. All inhabitants were given bednets treated either with a placebo (milk) in two hamlets or with the pyrethroid insecticide permethrin (500 mg/m2) in two other hamlets. Malaria transmission occurred mainly during a few weeks of the rainy season, in September and October 1987. The indoor resting densities of mosquitoes in permethrin-treated hamlets were reduced, and we estimated over 90% reduction in biting on man by An. gambiae Giles sensu stricto in these hamlets. No mosquitoes were found under permethrin-treated bednets compared with eighty-one recovered from placebo-treated bednets. Mosquitoes exited more readily from rooms where permethrin-treated bednets were used than from rooms with placebo-treated nets. The annual mean probability that a child would receive an infective bite was estimated to be 0.09 in hamlets with insecticide-treated bednets, compared with 1.9 where placebo-treated bednets were used. Permethrin-treated bednets are therefore recommended as a means of effectively reducing the risk of exposure to malaria transmission, particularly in areas of low seasonal transmission. |
| spellingShingle | Lindsay, S Snow, R Broomfield, G Janneh, MS Wirtz, R Greenwood, B Impact of permethrin-treated bednets on malaria transmission by the Anopheles gambiae complex in The Gambia. |
| title | Impact of permethrin-treated bednets on malaria transmission by the Anopheles gambiae complex in The Gambia. |
| title_full | Impact of permethrin-treated bednets on malaria transmission by the Anopheles gambiae complex in The Gambia. |
| title_fullStr | Impact of permethrin-treated bednets on malaria transmission by the Anopheles gambiae complex in The Gambia. |
| title_full_unstemmed | Impact of permethrin-treated bednets on malaria transmission by the Anopheles gambiae complex in The Gambia. |
| title_short | Impact of permethrin-treated bednets on malaria transmission by the Anopheles gambiae complex in The Gambia. |
| title_sort | impact of permethrin treated bednets on malaria transmission by the anopheles gambiae complex in the gambia |
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