Long COVID is not the first chronic condition that can develop after an acute infection. For many years, people have experienced long-term health effects following illness from influenza, Epstein-Barr virus, and more. These conditions are often called infection-associated chronic illnesses. Long COVID has helped bring national attention to how acute infections can trigger lasting symptoms such as fatigue, brain fog, pain, and challenges in daily living. This growing awareness is creating new opportunities for research, care, and support for many living with complex chronic illnesses. Learning from long COVID can help improve understanding and care for all infection-associated chronic illnesses, and it is important to recognize that this is not a new phenomenon. #LongCOVIDAwareness