Section 690.100 Diseases and Conditions

The following notifiable diseases and conditions are declared to be infectious or communicable or of public health significance. Each suspected or diagnosed case shall be reported to the local health authority, which shall subsequently report each case to the Department. The method of reporting shall be as described in the individual Section for the disease or condition. Appropriate infection control standards shall be implemented for cases and contacts per existing infection prevention and control standard precautions and transmission-based protocols.

a) Class I(a)

The following diseases or conditions shall be reported immediately (within three hours) by telephone, upon initial clinical suspicion of the disease or condition, to the local health authority, which shall then report to the Department immediately (within three hours). This interval applies to primary reporters identified in Section 690.200(a)(1) who are required to report to local health authorities and to local health authorities that are required to report to the Department. The Section number associated with each of the listed diseases or conditions indicates the Section under which the diseases or conditions are reportable. Laboratory specimens of agents required to be submitted under Subpart D shall be submitted within 24 hours to the Department laboratory.

1)	Any unusual case of a disease or condition not listed in this Part that is of urgent public health significance	690.295

2)	Anthrax*	690.320

3)	Botulism, foodborne	690.327

4)	Brucellosis* (if suspected to be a bioterrorist event or part of an outbreak)	690.330

5)	Coronavirus, Novel, including Severe Acute Respiratory Syndrome (SARS) and Middle Eastern Respiratory Syndrome (MERS)	690.361

6)	Diphtheria*	690.380

7)	Influenza A, Novel or Variant Virus*	690.469

8)	Measles, suspect, probable or confirmed*	690.520

9)	Plague*	690.570

10)	Poliomyelitis	890.580

11)	Q-fever* (if suspected to be a bioterrorist event or part of an outbreak)	690.595

12)	Smallpox	690.650

13)	Tularemia* (if suspected to be a bioterrorist event or part of an outbreak)	690.725

14)	Any suspected bioterrorist threat or event	690.800

b) Class I(b)

The following notifiable diseases or conditions shall be reported as soon as possible during normal business hours, but within 24 hours (i.e., within eight regularly scheduled business hours after identifying the case), to the local health authority, which shall then report to the Department as soon as possible, but within 24 hours. This interval applies to primary reporters identified in Section 690.200(a)(1) who are required to report to local health authorities and to local health authorities that are required to report to the Department. The Section number associated with each of the listed diseases and conditions indicates the Section under which the diseases and conditions are reportable. Laboratory specimens of agents required to be submitted under Subpart D shall be submitted within three days after identification of the organism to the Department laboratory.

1)	Acute Flaccid Myelitis (AFM)	690.291

2)	Botulism, intestinal, wound, and other	690.327

3)	Brucellosis* (if not suspected to be a bioterrorist event or part of an outbreak)	690.330

4)	Chickenpox (Varicella)	690.350

5)	Cholera*	690.360

6)	Cronobacter, including C. sakazakii and C. malonaticus, in infants younger than 12 months of age	690.362

7)	Escherichia coli infections* (E. coli O157:H7 and other Shiga toxin-producing E. coli)	690.400

8)	Haemophilus influenzae, invasive disease*	690.441

9)	Hantavirus pulmonary syndrome*	690.442

10)	Hemolytic uremic syndrome, post-diarrheal	690.444

11)	Hepatitis A	690.450

12)	Influenza, (Laboratory Confirmed Deaths in persons younger than 18 years of age)	690.465

13)	Influenza (Laboratory Confirmed Testing via ELR only and Intensive Care Unit Admissions)	690.468

14)	Melioidosis due to Burkholderia pseudomallei	690.530

15)	Mumps	690.520

16)	Neisseria meningitidis, invasive disease and purpura fulminans *	690.555

17)	Any Suspected or Confirmed Outbreak of a Disease of Known or Unknown Etiology that may be a Danger to the Public Health, Whether the Disease, Infection, Microorganism, or Condition is specified in the Rule (including, but not limited to, foodborne, healthcare-associated, zoonotic disease, and waterborne outbreaks)	690.565

18)	Pertussis (whooping cough)	690.750

19)	Q-fever due to Coxiella burnetii* (if not suspected to be a bioterrorist event or part of an outbreak)	690.595

20)	Rabies, human	690.600

21)	Rabies, potential human exposure and animal rabies	690.601

22)	Respiratory Syncytial Virus (RSV) Infection (Laboratory Confirmed Testing via ELR only, Pediatric Deaths, and Intensive Care Unit Admissions)	690.605

23)	Rubella	690.620

24)	SARS-CoV-2 Infection (COVID-19) (Laboratory Confirmed Testing via ELR only, Pediatric Deaths, and Intensive Care Unit Admissions)	690.635

25)	Staphylococcus aureus infections with intermediate or high level resistance to Vancomycin*	690.661

26)	Streptococcal infections, Group A, invasive and sequelae to Group A streptococcal infections In Persons Admitted to the Hospital or Residing in a Residential Facility, including antibiotic susceptibility test results	690.670

27)	Tularemia* (if not suspected to be a bioterrorist event or part of an outbreak)	690.725

28)	Typhoid fever* and Paratyphoid fever (including S. Typhi, S. Paratyphi A, S. Paratyphi B (tartrate negative) and S. Paratyphi C cases)	690.730

29)	Typhus	690.740

c) Class II

The following notifiable diseases and conditions shall be reported as soon as possible during normal business hours, but within three days, to the local health authority, which shall then report to the Department within three days. The Section number associated with each of the listed diseases and conditions indicates the Section under which the diseases are reportable. Laboratory specimens of agents required to be submitted under Subpart D shall be submitted within three days after identification of the organism to the Department laboratory.

1)	Arboviral Infection*	690.322

2)	Campylobacteriosis	690.335

3)	Cryptosporidiosis	690.365

4)	Cyclosporiasis	690.368

5)	Hepatitis B	690.451

6)	Hepatitis C	690.452

7)	Histoplasmosis	690.460

8)	Legionellosis*	690.475

9)	Leptospirosis*	690.490

10)	Listeriosis*	690.495

11)	Malaria*	690.510

12)	Multi-drug resistant organisms considered to be of epidemiologic importance due to either severity of clinical disease, potential for transmission of genetic elements, or opportunities for effective control efforts	690.445

13)	Psittacosis due to Chlamydia psittaci	690.590

14)	Salmonellosis* including Paratyphi V var. L(+) tartrate+ (other than S. Typhi, S. Paratyphi A., S Paratyphi B (tartrate negative) and S. Paratyphi C cases)	690.630

15)	Shigellosis*	690.640

16)	Toxic shock syndrome due to Staphylococcus aureus infection	690.695

17)	Streptococcus pneumoniae, invasive disease in children younger than five years	690.678

18)	Tetanus	690.690

19)	Tickborne Infections, including African Tick Bite Virus, Anaplasmosis, Babesiosis, Bourbon Virus, Ehrlichiosis, Heartland Virus, Lyme disease, and Spotted Fever Rickettsiosis	690.698

20)	Trichinosis	690.710

21)	Vibriosis (Other than Toxigenic Vibrio cholera O1 or O139)*	690.745

* Diseases or conditions for which laboratories are required to forward clinical materials to the Department's laboratory in accordance with Subpart D of this Part.

d) When an epidemic of a disease or conditions dangerous to the public health occurs, and present rules are not adequate for its control or prevention, the Department shall issue more stringent requirements.

(Source: Amended at 48 Ill. Reg. 4098, effective February 27, 2024)