Flu activity in suburban Cook County, including Park Forest, has risen from high to very high. (Credit: MGN) Health and Fitness, Local, Medical, Park Forest, Science Flu Activity in Suburban Cook County Elevated to Very High by eNews Park Forest on January 6, 2026 eNews Park Forest Author More in Health and Fitness: On Hantavirus, Park Forest Officials Urge Caution May 18, 2026 Rep. Kelly Condemns FDA Approval of Flavored E-Cigarettes May 6, 2026 Park Forest Aligns With Illinois Guidance on Childhood Vaccines Amid Federal Changes January 11, 2026 Cook County, IL—(ENEWSPF)— Flu activity in suburban Cook County, including Park Forest, has risen from high to very high, prompting public health officials to renew calls for preventive measures as respiratory illnesses spread this winter.