https://www.theatlantic.com/science/archive/2021/06/dengue-mosquitoes-defanged/619161
Scientists are infecting mosquitos with a bacterium called Wolbachia, which prevents mosquitos from being infected with dengue viruses! The process involves releasing a small amount of infected mosquitos in various areas, and those mosquitos spread Wolbachia to the rest of the local population. The first trial reduced the incedence of dengue by 77%! 😀