Thank you for the information. I have no connection to the charity I linked (except I think I may have given them $50 once), and I don't know which charities, if any, are effective at preventing malaria. Maybe they should be giving out fishing nets as well. It's telling that for the communities receiving these nets, they see starvation as a more immediate threat.

Anyway, my point is just that if you're looking to make optimal use of money to save or improve human lives, there are many things that should be higher priorities than stopping people dying "of old age" in the West.