Assoc. Prof. Dr. Lale Ozisik is a faculty member at the Division of General Internal Medicine, Department of Internal Medicine, Hacettepe University Faculty of Medicine and at the Department of Vaccinology, Hacettepe University Vaccine Institute.. Her areas of expertise include adult immunization, acute care, and medical education. Dr. Ozisik also holds a Master’s degree in Medical Education. Her clinical focus includes acute care for patients with organ failure and chronic diseases, as well as emergency internal medicine. She has contributed to the development of national Adult Immunization Guidelines and is a member of the Adult Vaccination Working Group of the European Federation of Internal Medicine. Dr. Ozisik plays an active role in both national and international adult vaccination initiatives.