Read about how the mosquito breeding programme works: https://www.bmj.com/content/383/bmj.p...

Mosquitoes infected with bacteria are becoming a cost-effective way to stop some of the greatest disease threats in the world, including dengue, chikungunya, and Zika viruses. Mun-Keat Looi visits one site in Medellin, Colombia, where these insects are “made”, and then released into the city.