GM mosquitoes succeed at reducing dengue, company says
Brazil stats show fewer cases of virus where genetically sterilized males were released
![Piracicaba, Brazil](https://i0.wp.com/www.sciencenews.org/wp-content/uploads/2016/07/071516_SM_mosquitos_feat.jpg?fit=860%2C460&ssl=1)
FLY ZONE In Piracicaba, Brazil, in February, a scientist releases mosquitoes genetically engineered to pass on DNA that kills off future offspring before they get a chance to bite. The goal is to reduce the incidence of such mosquito-borne diseases as dengue.
Victor Moriyama/Getty Images