At 7, I don't believe I consented to the mosquitos or the shots.
You also didn't consent to your mother's prenatal behaviour, neonatal nutrition, to going to school or having to clean up your room. Children are sapient. But it gets ridiculous when we extend the individual rights adults enjoy to them.
For mosquitoes, nature doesn't require consent, but humans are put on another standard.
Or do you think that because nature does something, humans are free to do it to themselves, like murder?
A wild bear will kill you, so therefore a human can kill another human right?
It's possible an intervention like this one could also save a lot of lives, and therefore might also warrant an exception from individual consent. (Or not; it would depend on the specific expected benefits and risks.)