TOKYO, Jan 12 ― Mosquitoes that transmit dengue and other viruses have evolved growing resistance to insecticides in parts of Asia, and novel ways to control them are...
TOKYO, Jan 12 ― Mosquitoes that transmit dengue and other viruses have evolved growing resistance to insecticides in parts of Asia, and novel ways to control them are desperately needed, new research warns.
“In Cambodia, more than 90 percent of Aedes aegypti mosquitoes have the combination of mutations that results in an extremely high level of resistance,” Kasai told AFP.That meant insecticide levels that would normally kill almost 100 per cent of mosquitoes in a sample killed only around seven per cent of the insects.
But neither option is yet close to eradicating dengue, and Aedes aegypti mosquitoes carry other diseases, including zika and yellow fever.Resistance was also detected in another type of mosquito, Aedes albopictus, though at lower levels ― possibly because it tends to feed outdoors, often on animals, and may be exposed to insecticides less than its human-loving Aedes aegypti counterparts.
But the research shows “commonly employed strategies may no longer be effective,” said Cameron Webb, an associate professor and mosquito researcher at NSW Health Pathology and the University of Sydney.
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