It's a remarkable little flip in thinking; instead of looking at mosquitoes as the bane of our existence, blood-sucking parasites that do nothing but make us itchy and sick, the research team saw an airborne swarm of organic vaccine delivery systems that would apply all the wisdom of millions of years of evolution to inject entire populations with vaccines and regular booster shots.

https://newatlas.com/infectious-diseases/mosquito-bite-vaccine-malaria/