Communicable Disease Fact Sheets

What Are Reportable Communicable Diseases?

Physicians, nurses, dentists; day care, school and university personnel; and health care and laboratory personnel ARE REQUIRED BY LAW TO REPORT the following infectious diseases to the local health department:

In Champaign County reports must be made to the Champaign-Urbana Public Health District Communicable Disease Investigator at (217) 531-5361.

Class I (a) Must be Reported Immediately (within 3 hours)

• Any unusual case or cluster of cases that may indicate a public health hazard
• Anthrax*
• Botulism, foodborne
• Brucellosis* (if suspected to be a bio-terrorist event or part of an outbreak)
• Influenza A, Novel Virus
• Plague*
• Q-fever* (if suspected to be a bio-terrorist event or part of an outbreak)
• Severe Acute Respiratory Syndrome (SARS)
• Smallpox
• Tularemia*
• Any suspected bio-terrorism threat of event

Class I (b) Must be Reported Within 24 Hours

• Any unusual case or cluster of cases that may indicate a public health hazard Botulism, infant, wound, and other
• Cholera*
• Diarrhea of the newborn
• Diphtheria*
• Enteric Escherichia coli infections*
• Foodborne or waterborne illness
• Haemophilus influenzae, meningitis and other invasive disease*
• Hantavirus pulmonary syndrome*
• Hemolytic uremic syndrome, post-diarrheal
• Hepatitis A
• Measles
• Mumps
• Neisseria meningitides, meningitis and invasive*
• Pertussis*
• Poliomyelitis
• Rabies, human
• Rabies, potential human exposure
• Rubella
• Reye Syndrome
• Smallpox vaccination, complications of
• Staphylococcus aureus, Methicillin resistant (MRSA) clusters of 2 or more cases in a community setting
• Staphylococcus aureus, Methicillin resistant (MRSA), occurring in infants under 61 days of age
• Staphylococcus aureus infections with intermediate or high level resistance to vancomycin*
• Streptococcal infections, Group A, invasive (including TSS) and sequelae to Group A streptococcal infections (rheumatic fever, acute glomerulonephritis and scarlet fever)
• Typhoid fever*
• Typhus

Class II Must be Reported Within 7 Days

• AIDS
• Amebiasis*
• Arboviral Infection* (including, but not limited to, California encephalitis, St. Louis encephalitis and West Nile virus)
• Blastomycosis
• Brucellosis*
• Chancroid
• Chickenpox
• Chlamydia
• Creutzfeldt-Jakob Disease
• Cryptosporidiosis
• Cyclosporiasis
• Cyclosporidiosis
• Giardiasis
• Gonorrhea
• Hepatitis B and Hepatitis D
• Hepatitis C
• Histoplasmosis
• HIV infection
• Influenza, Deaths in persons less than 18 years of age
• Legionellosis* (Legionnaires' Disease)
• Leprosy
• Leptospirosis*
• Listeriosis*
• Malaria*
• Ophthalmia neonatorum (gonococcal)
• Psittacosis
• Q-fever*
• Salmonellosis* (other than Typhoid fever)
• Shigellosis*
• Staphylococcus aureus infection, toxic shock syndrome
• Staphylococcus aureus infections, occurring in infants under 28 days of age
• Streptococcal infections, group B, invasive disease, of the newborn
• Streptococcus pneumoniae, invasive disease (including antibiotic susceptibility test results)
• Toxic shock syndrome due to Staphylococcus aureus infection
• Syphilis
• Tetanus
• Tick-borne Disease, including ehrlichiosis,, anaplasmosis, Lyme disease, and Rocky Mountain spotted fever
• Trichinosis
• Tuberculosis
• Tularemia*
• Vibriosis (Non-cholera Vibrio infections)
• Yersiniosis

* Diseases for which laboratories are required to forward clinical materials to the Department's laboratory.

More information about Illinois state law and reportable diseases: