Communicable Diseases

Communicable diseases are infectious diseases that are spread from person to person (e.g., E. coli, Salmonella, chickenpox) or from animals to people (e.g., rabies, H1N1). There are about 65 communicable diseases that are reportable to the Cook County Department of Public Health (CCDPH) so we can prevent the spread. The CCDPH Reportable Diseases poster is available for download in two sizes: letter-size (8.5X11, PDF) and pocket-size (5X7, PDF)

In addition, we prevent the spread of infectious diseases through disease surveillance, community education, outbreak response and by providing recommendations to control the spread of communicable diseases in suburban Cook County.

Forms

Inter-Facility Infection Prevention Transfer Form

Communicable Disease Case Counts

Communicable disease case counts are shown below for vaccine preventable diseases, selected communicable diseases and sexually transmitted infections. Case counts will be provided quarterly for the current year only.

Vaccine Preventable Diseases 2010 2011 2012 2013 2014 5-yr Median 2015-Q4*
Diphtheria 0 0 0 0 0 0 0
Haemophilus Influenzae 32 23 26 26 34 26 33
Hepatitis B              
  Acute 25 24 15 23 7 23 11
  Chronic 327 315 267 371 371 327 312
Measles 0 1 0 5 0 0 14
Mumps 4 2 4 4 12 4 18
Pertussis (Whooping Cough) 142 280 461 143 186 186 159
Pneumococcal Disease (Invasive)¶ 18 9 7 8 9 9 7
Rubella 0 0 0 0 1 0 0
Tetanus 1 0 1 0 0 0 0
Varicella 209 137 123 99 85 123 64
Selected Communicable Diseases
Cryptosporidiosis 27 17 8 23 23 23 10
E.coli O157:H7 10 16 18 11 8 11 8
Hepatitis A 5 6 6 20 9 6 12
Hepatitis C 852 920 862 802 956 862 922
Histoplasmosis 16 12 20 20 21 20 21
Legionnaires' Disease 39 27 51 73 69 51 47
Listeriosis 6 6 4 11 5 6 10
Lyme Disease 32 31 36 42 33 33 41
Malaria 9 19 7 15 15 15 13
Meningococcal Disease 3 3 3 0 3 3 1
Salmonellosis 357 260 310 311 314 311 302
Shigellosis 128 60 52 49 144 60 90
Streptococcal Invasive (Group A) 55 49 69 65 60 60 54
Tuberculosis  93 75 89 78 64 78 85
Typhoid Fever 6 8 2 4 3 4 7
West Nile Virus (Neuroinvasive) 15 10 61 15 10 15 4
Sexually Transmitted Infections
Chlamydia 8,825 8,403 8,820 8,977 9,384 8,825 **
Gonorrhea 2,093 2,071 2,081 2,009 1,928 2,071 **
HIV (not AIDS) 172 166 174 154 187 172 **
AIDS 78 58 86 92 79 79 **
Syphilis§ 98 91 91 65 69 91 **

Except for tuberculosis, excludes Evanston, Oak Park, Skokie and Stickney Township
* Provisional cases through the fourth quarter of 2015
† Includes type B
¶ As of 3/08, reportable only in those < 5 years of age
§ Primary and secondary syphilis
** Due to reporting lags, data are not available