Reportable Diseases

  banner, Chicago Health Alert Network (HAN)

Enroll in the Chicago Health Alert Network (HAN), a real-time communication portal for all Chicago Department of Public Health (CDPH) partners here:

Joining the HAN is an easy way to stay informed about emerging health threats such as hepatitis A, measles, West Nile Virus and other diseases affecting Chicago. After you sign up, we will send updates directly to your email.

By filling out the enrollment form, you are requesting access to the Chicago HAN. After signup, you will receive a confirmation email to complete your enrollment.

Chicago HAN updates are based on information that is relevant to your healthcare specialty, according to the information you supply at sign up. Enrollment provides an easy way to get the information you need to raise your awareness about identifying and reporting health threats.

Every disease reported could prevent a future outbreak.

Report serious diseases.

Call 312-743-9000. After hours, dial 311.

Know WHEN and HOW to report a disease.

Reporting timeframes depend on the specific disease. For diseases to be reported immediately or within 24 hours, dial 312-743-9000 to report a case during business hours. After hours, dial 311 and ask for the communicable disease physician on call. Cases can also be reported electronically through the Illinois National Disease Surveillance System (I-NEDSS). Reporting to the Chicago Department of Public Health (CDPH) in a timely manner allows accurate tracking of the frequency of these cases and distribution of appropriate health alerts.

Per the Control of Communicable Disease Code of Illinois, it is the responsibility of physicians, physician assistants, nurses, nurse aides or any other person having knowledge of any of the following diseases, confirmed or suspected, to report the case to the Chicago Department of Public Health (CDPH) within the indicated timeframe, detailed below.

REPORT IMMEDIATELY (within 3 hours by phone):

  • Any unusual case or cluster of cases that may indicate a public health hazard (e.g. MERS-CoV, Ebola Virus Disease, Acute Flaccid Myelitis)
  • Any suspected bioterrorism threat or event
  • Anthrax
  • Botulism, foodborne
  • Brucellosis (if suspected to be a part of a bioterrorist event or part of an outbreak)
  • Diphtheria
  • Influenza A, variant
  • Plague
  • Poliomyelitis
  • Q-fever (if suspected to be a bioterrorist event or part of an outbreak)
  • Smallpox
  • Severe Acute Respiratory Syndrome (SARS)
  • Tularemia (if suspected to be a bioterrorist event or part of an outbreak)

REPORT WITHIN 24 HOURS (by phone or e-reporting):

  • Botulism: intestinal, wound, and other
  • Brucellosis
  • Chickenpox (varicella)
  • Cholera (Vibrio cholera O1 or O139)
  • Enteric Escherichia coli infections (O157:H7, STEC, EHEC, EPEC, ETEC)
  • Foodborne or waterborne illness
  • Haemophilus influenza, meningitis and other invasive disease
  • Hantavirus pulmonary syndrome
  • Hemolytic uremic syndrome, post diarrheal
  • Hepatitis A
  • Influenza-associated intensive care unit hospitalization
  • Measles
  • Neisseria meningitidis, meningitis and invasive disease
  • Mumps
  • Pertussis (whooping cough)
  • Q-fever
  • Rabies, (potential) human and/or animal exposure
  • Rubella
  • Smallpox vaccination, complications of
  • Staphylococcus aureus, Methicillin resistant (MRSA) 2 or more cases in a community setting
  • Staphylococcus aureus, Methicillin resistant (MRSA) in infants under 61 days of age
  • Staphylococcus infections, Group A, invasive and sequelae
  • Tularemia
  • Typhoid Fever

REPORT WITHIN 7 DAYS (by e-reporting):

  • AIDS
  • Arboviral Infection (e.g., Dengue fever, California encephalitis, St. Louis encephalitis, West Nile Virus, Chikungunya and Zika Virus)
  • Campylobacter
  • Chancroid
  • Chlamydia (including lymphogranuloma venereum)
  • Creutzfeldt-Jaekob Disease (CJD)
  • Cryptosporidiosis
  • Cyclosporiasis
  • Drug-resistant organism, extensively
  • Gonorrhea
  • Hepatitis B, Hepatitis C, and Hepatitis D
  • Histoplasmosis
  • HIV infection
  • Influenza deaths in persons less than 18 years of age
  • Legionellosis
  • Leprosy (Hansen's Disease)
  • Leptospirosis
  • Listeriosis
  • Malaria
  • Ophthalmia neonatorum (gonococcal)
  • Psittacosis
  • Reye Syndrome
  • Salmonellosis (other than typhoid)
  • Shigellosis
  • Streptococcus pneumonia, invasive disease (< 5 years)
  • Syphilis (including congenital syphilis)
  • Tetanus
  • Tickborne Disease (e.g., ehrlichiosis, anaplasmosis, babesiosis, Lyme disease, and spotted fever rickettsioses)
  • Toxic shock syndrome due to staphylococcus aureus infection
  • Trichinosis
  • Tuberculosis
  • Vibriosis (Non-cholera Vibrio infections)
  • Yersiniosis

DOWNLOAD a PDF of reportable diseases and reporting timeframes to keep on hand as a reference.