The Champaign-Urbana Public Health District provides weekly reports on the “big 3” respiratory illnesses— COVID-19, flu, and Respiratory Syncytial Virus (RSV). These reports utilize data from both laboratory-based sources and emergency department visits, adding context to respiratory virus surveillance, especially when COVID-19, seasonal influenza, and RSV co-circulate. Please note that all data are preliminary and may change as additional information is received.