Stephen Sosler

Stephen Sosler is the Immunization Technical Advisor in the Vaccines and Sustainability team at the Gavi Alliance Secretariat. In this role Dr Sosler provides guidance, expertise and leadership on a range of immunization programme and vaccine issues associated with Gavi’s supported vaccine portfolios. Specific to polio, Dr Sosler has led collaborative efforts to roll-out inactivated poliovirus vaccine (IPV) in Gavi eligible countries as well as the reshaping of Gavi’s broader engagement in polio eradication. Before joining Gavi, Dr Sosler held key positions at the US Centers for Disease Control and Prevention, seconded to the World Health Organization (WHO) as the Deputy Project Manager, Universal Immunization Programme for India’s National Polio Surveillance Project (NPSP), coordinating immunization strengthening, measles control and new vaccine introduction activities supported by the Project's central team and network of 300+ Surveillance Medical Officers posted throughout the country (2009-2012). Prior to India, he was seconded to the WHO Central Africa Inter-country Support Team in Libreville, Gabon (2004-2009), where he served as the Accelerated Disease Control Officer providing technical assistance to 11 central African national immunization programmes and WHO and UNICEF country offices to strengthen immunization delivery and vaccine preventable disease surveillance and outbreak response activities. Dr Sosler has a PhD and Master of Public Health in International Health-Epidemiology from the Tulane University School of Public Health and Tropical Medicine.