Economic returns to investment in AIDS treatment in low and middle income countries.

Since the early 2000s, aid organizations and developing country governments have invested heavily in AIDS treatment. By 2010, more than five million people began receiving antiretroviral therapy (ART)--yet each year, 2.7 million people are becoming newly infected and another two million are dying without ever having received treatment.

An analysis of how the GAVI alliance and low- and middle-income countries can share costs of new vaccines.

Immunization is one of the "best buys" in global health. However, for the poorest countries, even modest expenditures may be out of reach. The GAVI Alliance is a public-private partnership created to help the poorest countries introduce new vaccines.