Malaria kills more than one million people every year, yet nobody need die. Half a billion people fall ill.
Given the scale of this problem, malaria is clearly a humanitarian issue.
Malaria is also an economic issue. Malaria is the single greatest drag on the economy of Africa. Every $1m spent fighting malaria efficiently improves the GDP - the wealth - of the continent of Africa by $12m. Fighting malaria is a very good investment.