In India, Bill Gates shares what we can all learn from the fight against polio

India’s success in eradicating polio offers a script for winning some of the world’s most difficult battles in every area of human welfare, writes Bill Gates.

To be successful, any campaign this big has to include a clear goal, a comprehensive plan and precise measurements of progress. But the antipolio campaign in India took a crucial extra step: It enlisted the support of the full sweep of Indian society, including health workers, ordinary citizens and some of the poorest people in the most impoverished regions of the country.