Writing in the Bill & Melinda Gates Foundation’s “Impatient Optimists” blog, Joe Cerrell, director of the foundation’s Europe office, and David Ferreira, managing director for innovative finance and head of the Washington, D.C., office at the GAVI Alliance, examine the benefits of investing in vaccines, stating, “Funding and supporting the delivery of life-saving vaccines is one proven way that the private sector can obtain measurable, long-term, and extremely cost-effective results.” They discuss GAVI’s vaccination efforts, highlighting the GAVI Matching Fund, “under which every dollar donated or gift-in-kind contributed by a private entity, its customers and employees is matched by the Gates Foundation or the U.K. government” (1/23).