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RE: The continuing evolution of mosquito nets may spell the end of suffering from mosquito-borne diseases
Great invention and happy it is helping so many people who are affected by these killer mosquitos. I'm no science junkie, but unfamiliar with how fast the mosquitos will get used to the insecticide...unless you did some massive spray to kill the majority of mosquitos all at once.
Hi Victoria, it can really depend on the type of insecticide being used. Usually the guidance is to change the insecticides you use every 5-10 years, so that as more of the population becomes resistant you change to another one. You can find out more about mechanisms of resistance here. In areas where they are going for malaria elimination (especially south-east asia) they may suggest having multiple insecticides used at one time to try and crash the population and together with improved case management get rid of all the malaria parasites in the area. The idea is that you won't have to worry about mosquitoes becoming resistant in those areas if they are not carying anything harmful.