NOTE: An ILI visit means that the patient reported fever with cough or sore throat, or used the word “flu” to describe either their symptoms or their reason for the visit. Syndromic surveillance is based on the patient’s chief complaint when seeking care in an ED and does not capture the cause of the illness. Other illnesses besides influenza can cause ILI symptoms and not all patients with influenza will report symptoms that include “fever with cough or sore throat” or “flu”. However, the trend of ILI visits can be used to approximate seasonal influenza in the community.
Similar information for Indiana, the US, and the world can be found at:
- Indiana State Health Department – Influenza (the flu)
- CDC FluView influenza surveillance for the United States
- WHO Global Alert and Response – Influenza
For any questions regarding the data displayed on this page, please contact the Department of Epidemiology at firstname.lastname@example.org.