How does fighting diarrhoea stack up to malaria in effectiveness?

Abstract

I saw an infographic about diarrhoea the other day that really caught my attention with some big statistics. It got me thinking that I had never really considered combating diarrhoea specifically as an avenue for improving global health. Typically I’ve focussed on Malaria, specifically through the Against Malaria Foundation (AMF). Below is a comparison between the impacts diarrhoea and malaria and the costs of combating them. The following figures for diarrhoea are taken from this infographic and compared where possible to figures from malaria (sources listed). The infographic didn’t have a logo, producer or sources on it, and after research some of the figures don’t seem to check out.