Cook County is expanding walk-in COVID-19 vaccine availability to all of its mass vaccination sites beginning Monday.
- More sites in suburban Cook County are taking walk-ins starting on Monday, no appointment needed. This Tinley Park location and one in Madison opened for walk-ins on Wednesday. Here are locations of sites opening Monday-- Triton College in River Grove, South Suburban College in South Holland, and Des Plaines and Forest Park. Hours are 8:30 AM to 5:00 PM Mondays through Fridays. You can simply show up and register on site.