It's the classic case of problem reaction solution.
Create the problem by releasing mosquitoes with Malaria .
Get a reaction after a surge in Malaria cases where they had disappeared.
Provide the solution with drugs that can control Malaria illnesses.
https://thepeoplesvoice.tv/bill-gates-admits-his-gm-mosquitoes-are-causing-deadly-malaria-outbreak-in-u-s/
