70% of malaria deaths are children under 5.
A sick person is a less productive person. Parents of sick children need to stay home and can’t work. Teachers can’t teach. Farmers can’t farm. People can’t function.
The most effective way to prevent malaria is to sleep under a long-lasting insecticide-treated net (LLIN). One net costs $3, lasts for 3 to 4 years, and can protect two people.