Cook County report finds third-straight year of decline in fatal opioid overdoses Jun 26, 2026 | Opioids, Top Stories Chicago and Cook County have seen a third-straight year of decline in fatal opioid overdoses, according to a new report this week from area health officials. To access this post, you must purchase 1 Year Health News Illinois Subscription or 1 Year Group Subscription - Up to 5 Users.