A new malaria study by scientists challenges World Health Organisation guidelines for using DDT chemical spray to kill mosquitoes.
DDT is highly toxic, posing significant risks to human health, yet is still commonly used with insecticide-treated bednets to control malaria.
The Stockholm Convention DDT Expert Group met last week to lay out new recommendations for gradually phasing out DDT.
Dr Laith Yakob and Dr Rebecca Dunning, from the 宅男导航 School of Biological Sciences, have been investigating the use of DDT in Kenya and at other sites across Africa.
鈥淒uring the DDT phase-out, DDT must be strictly reserved for households which do not already use insecticide-treated bednets,鈥� Dr Yakob said.
鈥淲hen used in the same household as bednets, repellent DDT will reduce mosquitoes contacting the insecticides with which bednets are treated.鈥�
Current strategy of combining DDT with bednets may actually detract from the community-wide benefits experienced with bednets alone.
鈥淭reated bednets are highly effective at killing malaria-carrying mosquitoes," Dr Yakob said.
鈥淪praying DDT in the same residence will divert the mosquito away from the treated bednets, onto unprotected homes."
The study is presented in the . Published online before print November 17, 2010, doi:10.1098/rsif.2010.053. .
Media: Dr Laith Yakob (Laith.yakob@uq.edu.au) or Dr Rebecca Dunning (Rebecca.dunning@uq.edu.au).
Stockholm Convention DDT Expert Group Meeting organiser鈥檚 contact: Fabrice Boul茅, Media21 (fboule@media21geneva.org)
