Voice of America: Mosquitoes Less Repelled by DEET After First Exposure

Voice of America Voice of America is an international news and broadcast organization serving Central and Eastern Europe, the Caucasus, Central Asia, Russia, the Middle East and Balkan countries

Mosquitoes Less Repelled by DEET After First Exposure Feb 20th 2013, 21:44 A powerful weapon in the battle against mosquitoes has a fatal flaw. The insects are able to ignore the widely-used repellent DEET just a few hours after being exposed to it. In the journal PLOS ONE, researchers from the London School of Hygiene and Tropical Medicine report that DEET appears to be effective at keeping the insect away for up to three hours. In their study, they used Aedes aegypti mosquitoes, which can transmit dengue fever. They found that a brief exposure to DEET was enough to ...

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