Are Genetically Modified Insects Being used to Curb Disease?

Brazil is releasing genetically modified mosquitoes to combat dengue fever.

Genetically modified insects are being used to curb disease in Brazil,
where mosquitoes are being engineered to fight against dengue fever, a
disease with no vaccine that is spread by the Aedes aegypti mosquito.
Scientists added a deadly gene to this particular breed of mosquitoes so
that they will die off after being released into the wild, which will curb
the spread of dengue fever. Only the female variety actually bites, so they
are destroyed in the lab. The males are released in the hope that they will
mate with wild female mosquitoes and produce offspring that will die before
spreading the disease.
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