Dr. Wannous is the One Health Senior Specialist and Global Coordinator at the World Organisation for Animal Health (WOAH). Her work centers on preventing and reducing the risk of health threats at the human-animal-environment interface through the One Health approach. Her focus includes addressing zoonotic and vector-borne diseases, and drivers of risk, including climate change and biodiversity loss.

Prior to joining WOAH, Dr. Wannous had an extensive experience working within the UN System, specializing in health emergencies prevention, preparedness, and response. She served as the Senior Policy Advisor to the UN Special Envoy on the Ebola response in West Africa and to the UN System Influenza Coordination. Dr. Wannous also led the Toward a Safer World Network for Pandemic Preparedness, coordinated the health aspects of the Sendai Framework for Disaster Risk Reduction, and coordinated its Science and Technology Partnership.
Dr. Wannous is an active member of several prominent Steering Committees, including the Future Earth Health Knowledge Network, the International Alliance Against Health Risks in Wildlife Trade, and the Council of the International Society of Infectious Diseases.

Dr. Wannous is a public health expert with a PhD in International Health and Development from Tulane University, USA, and a Master of Science in Health Research from the London School of Hygiene & Tropical Medicine, UK.