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Personal Protection Against Mosquitoes in Dar es Salaam, Tanzania, by Using a Kerosene Oil Lamp to Vaporize Transfluthrin.

Pates, H. V., Line, J. D., Keto, A. J. and Miller, J. E. (2002) Personal Protection Against Mosquitoes in Dar es Salaam, Tanzania, by Using a Kerosene Oil Lamp to Vaporize Transfluthrin. Medical and veterinary entomology, 16 (3). pp. 277-84. ISSN 0269-283X

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The effectiveness of a cheap and easy method of household protection against Culex quinquefasciatus Say and other mosquitoes (Diptera: Culicidae) was investigated in Dar es Salaam, Tanzania. Kerosene-burning lamps (korobois) were modified to heat and vaporize transfluthrin, a volatile pyrethroid insecticide. When transfluthrin was added to fuel of the lamp, protection against biting was poor unless a very high concentration of insecticide was used. A modified lamp (= vaporizing koroboi) was designed to overcome this problem by mixing the insecticide with vegetable oil and heating it to 120 degrees C in a tin held just above the flame. The concentration of 0.1% transfluthrin in vegetable oil gave 50-75% reduction in biting, a similar degree of protection to that obtained from burning a mosquito coil containing a synthetic pyrethroid (0.25% d-allethrin) and significantly better protection than a locally bought coil (brand 'White Crane', probably containing DDT). Greater protection (consistently > 90%) was achieved with a higher concentration of transfluthrin (0.5%) in the vegetable oil. This modified lamp is simple, cheap and employs locally available technology. With further development, and due regard to inhalation toxicity of the vaporized materials, it may offer a more cost-effective alternative to a mosquito coil as a means of personal protection, and a useful complement to a net for the early part of the evening before bedtime.

Item Type: Article
Keywords: Anopheles Gambiae, Culex Quinquefasciatus, Allethrin, Kerosene, Mosquito Coils, Mosquito Repellents, Oil Lamps, Personal Protection, Pyrethroids, Transfluthrin, Veteble Oil, Dar es Salaam, Tanzania
Subjects: Malaria > Vector control
Divisions: Other
Depositing User: Mr Joseph Madata
Date Deposited: 17 Mar 2015 06:47
Last Modified: 17 Mar 2015 06:47

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