UNITED NEWS INTERNATIONAL (UNI) – A group of Australian scientists says they have successfully wiped out more than 80 percent of disease-carrying mosquitoes in North Queensland.

The landmark achievement was part of an experiment carried out by scientists from the Commonwealth Scientific and Industrial Research Organization.

They targeted Aedes aegypti mosquitoes, which spread dengue fever and Zika.

As part of the study, almost 20 million mosquitoes were bred and the males were infected with bacteria that made them sterile. Then last year, over 3 million of them were released in towns on the Cassowary Coast.

The results suggest, the sterile male mosquitoes didn’t bite or spread disease and when they mated with wild females, their eggs didn’t hatch — leading to a population crash.

In a statement on July 10, a spokesperson for CSIRO said the results were “a major win.”