Virus-thwarting mosquitoes decline on Vietnamese island

Scientists plan to release second generation of mosquitoes that suppress dengue

By Beth Mole, 16:47 PM December 12, 2013

Disease-blocking mosquitoes that were poised to take over a Vietnamese island appear to be dying off, according to recent results.

The mosquitoes, which scientists released from April to September, carry Wolbachia bacteria. The bacterial infection spreads among mosquitoes and prevents the insects from transmitting the dengue virus. Dengue causes painful fevers in people.

In November, the infected insects accounted for 65 percent of the island’s mosquito population (SN Online: 11/19/13). Scienti...

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