[jyothi]

Gates is finding a sample where (India) it is easy to implement solutions (knowledge of understanding, having a support system to solve the problems) and then take them to the larger audience. It is debatable if food & nutrition issue of India or Polio in India is comparable to problems in Mosambique or Brazil.

It seems like the basic problems of food, shelter, hygiene, health and education are basic needs and can be solved in similar ways across the nations without having to depend on govt policies.

I think this is a very sound approach. He should however pick a smaller geographical region than India.