Dr. Hadler joined the Center for Vaccine Equity in April 2018 as a Senior Advisor for Vaccine Preventable Diseases. His current responsibilities are focused on supporting national immunization technical advisory groups (NITAGs) to develop evidence based recommendations for seasonal influenza and other vaccines, through development of training materials (Evidence to recommendations toolkit and eLearning), facilitating trainings for country NITAGs and regional trainers, and supporting country NITAG assessments.
Previously, he worked for over 40 years in public health at the Centers for Disease Control and Prevention (CDC) and World Health Organization (WHO), with primary focus on prevention and control of vaccine preventable diseases (VPDs), viral hepatitis and bacterial respiratory diseases. He has extensive experience in surveillance, research, and prevention policy development on VPDs, including working with the US Advisory Committee on Immunization Practices (ACIP) over a 30 year interval. He has worked for WHO in Pakistan and in the Peoples Republic of China on China, and continues to provide consultation to CDC supporting the COVID pandemic response.