Case Studies for Global Health is a collection of case studies that examine and illustrate how people, organizations, companies and governments have worked together to try to solve a global health challenge. Thirty-three case studies were published in 2009. Fifteen of them have been updated here. Another 13 new case studies are also presented here. These studies describe existing or planned collaborative relationships, projects and transactions among a broad global health community. They cover many types of collaborations and a variety of disease conditions as well as current practices and lessons learned in the course of conducting business and structuring partnerships to deal with these conditions.