You seem to be strangely unaware of the large amount of money which has been spent for decades on mosquito control by individuals and all levels of government. There are widespread control campaigns, active research into developing new weapons (e.g. traps which are effective against tiger mosquitoes), and community awareness to get more people involved with habitat control and using things like bed nets.
I mean, does this sound like not doing something?
https://www.epa.gov/mosquitocontrol/success-mosquito-control...
Several companies have been working for years on genetic modifications to disrupt mosquito spread:
https://e360.yale.edu/features/genetically_modified_mosquito...
Which government are you talking about? I don't live in the US and you linked to EPA and Yale. I can tell you my government is doing very little to combat dengue fever, and when they do, it's too little, too late.
> widespread control campaigns [...] community awareness
There's very little of that. And one careless neighbor effectively endangers the whole apartment block.
Dengue is way more serious than COVID19. Particularly worrisome, having had dengue makes subsequent reinfections more life-threatening, not less.
There are ways to eradicate the mosquito -- mainly getting rid of small clear water containers near/within your home, such as vases and empty plant pots -- but we still don't do it until it's too late and becomes a problem. A single neighbor who doesn't do this endangers the whole block. And the authorities don't give a fuck. It's infuriating, really.
So to rephrase your question, why don't we do something about it? It's way more actionable than COVID19 (though lockdowns don't work for the reasons others told you). So who knows?