Kelsey Vaughan (@kelseyvaughan @ThinkwellGlobal) is a health economist with over ten years of public health experience in government, universities, research institutions and private consultancies in Europe, Latin America and the United States. Ms. Vaughan is the costing lead for the Immunization Costing Action Network (ICAN) project, including a systematic review on the costs of delivering vaccines in LMICs and 4 country costing studies.

Annette Ozaltin (aozaltin@thinkwell.global) is a Health Financing Director at ThinkWell (@ThinkWellGlobal) leading the Immunization Costing Action Network (ICAN) project, focused on building country capacity to generate and use evidence on the cost of delivering vaccines. She works to develop innovative solutions to health systems and financing challenges.

Frédéric Debellut (fdebellut@path.org) is a Health Economist at PATH with 10 years international experience in managing health related projects both at global and country levels with a specific focus on immunization (@PATHtweets). He provides technical support to countries in carrying out economic evaluations including costing analyses of new vaccine introductions and cost effectiveness. His work also involves forecasting demand for different vaccines.