This report focuses Global Public-Private Initiatives (GPPIs) for healthcare in developing countries. These GPPIs are a specific type of public-private partnerships. The report assesses company contributions and the rationale for industry involvement with GPPIs. It does not evaluate outcomes or effectiveness, nor does it deal with the governance and functioning of the partnerships in much detail. These issues are addressed in separate reports, focusing on four specific initiatives (GPEI, GAELF, RBM Partnership, Stop TB). Field studies on the implementation of these programmes in developing countries form part of the broader research project. This company profile analyses Merck + Co., a large pharmaceutical corporation, and its involvement in GPPIs.