Nina Schwalbe, MPH is a public health expert focusing on data analysis and evaluation. She is the Principal at Spark Street Advisors, a Principal Visiting Fellow at United Nations University - International Institute for Global Health, and on the faculty at Columbia’s Mailman School of Public Health. Nina has held senior leadership positions at UNICEF, Gavi, and the Open Society Foundations. She holds degrees from Harvard and Columbia Universities. She is member of the Council on Foreign Relations and chairs Gavi’s Evaluation Advisory Committee.