malaria

In a study released Monday, researchers from Britain and Italy genetically altered male mosquitoes so that they did not produce sperm - although they could still deliver seminal fluid while mating. You [could] in principle release large numbers of sterile males over many generations… and eventually all the females will have mated with the sterile males and…you can really reduce the number of mosquitoes
Forget mosquito netting and bug spray. malaria-spreading blood-suckers: introduce spermless males into the population.

spermless malaria

Female mosquitoes who mated with these genetically altered males produced sterile eggs that didn't hatch, according to the paper published in the journal Proceedings of the National Academy of Sciences. Researchers from Imperial College London sterilised male mosquitoes by genetically modifying them to neutralise a gene required for sperm production.

malaria

Female mosquitoes would then unknowingly mate with the modified males and fail to produce any offspring.