Resources Health TopicInfectious Diseases Respiratory Viruses Facet Health Topic DiseaseCOVID-19 (Coronavirus) (-) Flu RSV Facet Disease AudiencePublic Health Professionals Researchers Facet Audience Resource Category (-) Data Surveillance Facet Resource Category Facet Licensee Licensee N/A Facet Language Language N/A Data, Surveillance National, Regional, and State Level Outpatient Illness and Viral Surveillance Overview of Influenza Surveillance in the United States Data Respiratory Virus Activity Report