Epidemiology Reports

Communicable Disease Case Counts

A collection of surveillance reports tracking case counts for suburban Cook County. Reports are seasonal and can vary in timeframes.

• Communicable Disease Case Counts – Cook County Department of Public Health

Communicable Disease Data and Reports

Reports on case counts of influenza, tuberculosis, sexually transmitted infections (STIs), and HIV.

• Communicable Disease Data & Reports – Cook County Department of Public Health

Opioid Reports

A joint report on opioid overdose deaths in Cook County by year. Reports are in partnership with Chicago Department of Public Health and the Cook County Medical Examiner’s Office.

• Opioids – Cook County Department of Public Health

Mental Health and Substance Use Reports

Community Behavioral Health provides outreach, public education, training, assessment, and funding to non-profit partners to promote mental well-being and reduce the harms of substance use. Explore data and reports around trauma-informed care, overdose prevention, mental health, and related topics.

• Mental Health and Substance Use Reports

Opioid Research Articles

• Disparities in fatal and non-fatal opioid-involved overdoses among middle-aged non-Hispanic Black Men and Women (2025)

• Notes from the Field: Seizures, Hyperthermia, and Myocardial Injury in Three Young Adults Who Consumed Bromazolam Disguised as Alprazolam – Chicago, Illinois (2024)

• Description of Opioid-involved Hospital Deaths that Do Not Have a Subsequent Autopsy (2023)

• Trends in non-fatal and fatal opioid overdoses during the first two years of the coronavirus disease-2019 pandemic (2023)

Legal Intervention

• Relationship between Civilian Injuries Caused during Contact with Law Enforcement and Community-Level Sociodemographic Characteristics (2024)