DEET insect repellent may be losing efficacy?

Source: PLoS One Area: News According to a study, published in the journal PLOS One, authors examined host-seeking behaviour and electrophysiological responses of the mosquito species A. aegypti after pre-exposure to DEET. The authors found that three hours after pre-exposure the mosquitoes showed behavioural insensitivity, and electroantennography revealed this correlated with the olfactory receptor neurons responding less to DEET. The authors concluded that the change in behaviour as a result of pre-exposure to DEET has implications for the use of repellents and the ability of mosquitoes to overcome them.
Source: NeLM - News - Category: Drugs & Pharmacology Source Type: news