[The] announcement that JPMorgan Chase & Co. and the Bill & Melinda Gates Foundation are teaming up to fund development of late-stage technologies designed to fight disease in poor countries reflects a growing trend. Public-private partnerships are increasingly the norm when it comes to tackling vexing global health challenges. The model helps funnel desperately needed funds into research and development of drugs, vaccines and other technologies...One of the key aspects of the fund is that the Bill & Melinda Gates Foundation and the Swedish International Development Cooperation Agency will partly offset any losses, mitigating the risk for potential investors...