Earlier quoted context omitted.
The main problem is how do we actually eradicate mosquito's without introducing other severely risks? For example, one of the popular techniques is releasing genetically modified mosquitoes that are sterile. The problem is we don't know what could happen if/when these modified genes spread into the wider environment It's a very serious concern, whether or not eradicating mosquitoes will introduce more severe problems
How do sterile mosquitos spread their genes? (Genuine question! I don't know what the risk is)
Viruses are the most common way for genes to be transferred. A virus literally goes into the cell of the mosquito and copy's a small portion of its genes and splices it into its own genome, which it can then copy and splice into other organisms.