September 30, 2025, Chicago, Il, USA: Ephrem Chen, 9, receives a COVID-19 booster shot and a flu vaccine from an IDPH nurse during a walk-in clinic on Dec. 3, 2023, at St. Procopius School in Chicago's Pilsen neighborhood. Illinois is recommending the COVID-19 vaccine this respiratory virus season for all children ages 6 to 23 months old and for children between the ages of 2 and 17 if they are in higher risk groups, or if their parents want them to have the shot, recommendations that are similar to those made by the American Academy of Pediatrics. (Credit Image: © Brian Cassella/Chicago Tribune via ZUMA Press Wire)