Scientific book suggestion for investment in the third world.

The scientific book on the Copenhagen consensus : How to spend $50 billion to make the world a better place by Bjorn lomborg suggests that a unanimous panel of top economists agrees that out of 50 billion dollars 27 billion dollars should be used to reduce HIV Aids and 12 billion be used to reduce malnutrition through supplements and 10 billion to reduce malaria. I recommend following this scientific books recommendations in the investments of the Africa etfs 5 billion Euros I bought up until now.