Aziza Mwisongo is a medical doctor, public health physician, health systems specialist, academic and researcher with 19 years of experience. She possesses key skills and experience in technical support for global health, research, and training. Her research interest is mainly in health systems; introduction of new technologies, health policy, decision-making science, change management, human resources for health, monitoring and evaluation, intervention related to EPI systems, malaria, HIV, TB, and reproductive health. She is a proponent of mixed-method and implementation research methods. In the past, she has provided technical assistance for health systems strengthening activities at the global, regional, and national level. She currently leads the country preparation and introduction work for typhoid conjugate vaccine (TCV) with the Typhoid Vaccine Accelerating Consortium (TyVAC). In this role, she is responsible for supporting countries with decision-making, Gavi applications, TCV implementation, and post-implementation evaluation and research. In the past, Dr. Mwisongo has worked in Tanzania, South Africa, Ghana, Burkina Faso, Mozambique, and Indonesia.