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J W WRIGHT

Publications and source records attributed to J W WRIGHT.

8 recordsLinked to original sources
PubMed1964

STUDIES ON AIRCRAFT DISINSECTION AT "BLOCKS AWAY" IN TROPICAL AREAS.

During 1962 experiments on disinsection of aircraft passenger cabins at "blocks away" (i.e., after the doors have been closed following embarkation but before take-off) were conducted with single-use, disposable aerosol dispensers in various types of commercial aircraft operating in the tropics. The favourable results of these trials and of previous trials in temperate zones indicate that this method is suitable as a standard procedure for aircraft disinsection for international quarantine purposes.The biological effectiveness of the SRA formulation against susceptible mosquitos and its non-irritancy to passengers render it suitable as a standard formulation for aircraft disinsection. The G-1492 formulation-effective against resistant and non-resistant mosquitos-could be used where insecticide-resistance is proved, although it is slightly irritant to some passengers. Both formulations are described. The authors suggest that further research is needed to develop a safe formulation that is effective against resistant and non-resistant insects and yet not irritant to passengers and crew.

Aerosols↗
PubMed1962

Studies on aircraft disinsection at "blocks away".

With a view to expediting as much as possible the disinsection of aircraft required under the International Sanitary Convention for Aerial Navigation, experiments were performed under operating conditions on the disinsection of passenger cabins after the closing of the aircraft doors following embarkation but before take-off (designated "blocks away" disinsection) with single-use, disposable aerosol dispensers. A formulation containing 1.6% by weight pyrethrum extract (25% pyrethrins) and 3% DDT at a dosage of 10 g per 1000 cubic feet (35 g/100 m(3)) gave satisfactory control of non-resistant mosquitos and created no passenger reaction. A formulation containing 3.40% pyrethrum extract (20% pyrethrins) and 1.17% DDT at a dosage of 14-19 g per 1000 cubic feet (48-64 g/100 m(3)) was biologically effective for both resistant and non-resistant mosquitos but was markedly irritant to some passengers. The authors suggest lines along which further research might be conducted.

Aerosols↗
PubMed1957

Survey of possible insecticide resistance in body lice.

WHO inaugurated in 1953 a global survey of the susceptibility of the body lice to insecticides. The test used consisted, essentially, of treating a balbriggan type of cloth with dusting powder, placing the lice upon it, and assessing the mortality 24 hours later. The present paper describes the results of tests carried out in 37 countries. A significant resistance to DDT has been found to be present in many countries, and there are indications of several instances of BHC-resistance.

Animals↗