In an interview with Yahoo Finance at the World Economic Forum in Davos, Switzerland, Gates voiced his concerns over the current state of healthcare funding. “I’m a little worried,” Gates said.

“The world’s dealing with a lot of challenges right now, and the fact that we still have 5 million children dying before the age of five — it isn’t as visual, it’s not like a plane crashing or a bomb hitting a building — and yet, these deaths one by one add up to that 5 million,” he said.