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 2011 2012 2013 2014 2015 5-yr Median 2016-Q1*
Diphtheria 0 0 0 0 0 0 0
Haemophilus Influenzae 23 26 26 34 33 27 10
Hepatitis B            
  Acute 24 15 23 7 13 15 2
  Chronic 315 267 371 371 323 323 70
Measles 1 0 5 0 14 1 0
Mumps 2 4 4 12 22 4 20
Pertussis (Whooping Cough) 280 461 143 186 171 186 35
Pneumococcal Disease (Invasive)¶ 9 7 8 9 8 8 4
Rubella 0 0 0 1 0 0 0
Tetanus 0 1 0 0 0 0 1
Varicella 137 123 99 85 63 99 26
Selected Communicable Diseases
Cryptosporidiosis 17 8 23 23 10 17 3
E.coli O157:H7 16 18 11 8 8 11 0
Hepatitis A 6 6 20 9 12 9 3
Hepatitis C 920 862 802 956 932 920 222
Histoplasmosis 12 20 20 21 21 20 8
Legionnaires' Disease 27 51 73 69 47 51 6
Listeriosis 6 4 11 5 13 6 3
Lyme Disease 31 36 42 33 42 36 1
Malaria 19 7 15 15 13 15 0
Meningococcal Disease 3 3 0 3 1 3 0
Salmonellosis 260 310 311 314 315 311 40
Shigellosis 60 52 49 144 94 60 17
Streptococcal Invasive (Group A) 49 69 65 60 54 60 17
Tuberculosis  75 89 78 64 85 78 28
Typhoid Fever 8 2 4 3 8 4 5
West Nile Virus (Neuroinvasive) 10 61 15 10 4 10 0
Sexually Transmitted Infections
Chlamydia 8,403 8,820 8,977 9,384 ** ** **
Gonorrhea 2,071 2,081 2,009 1,928 ** ** **
HIV (not AIDS) 166 174 154 187 ** ** **
AIDS 58 86 92 79 ** ** **
Syphilis§ 91 91 65 69 ** ** **

Except for tuberculosis, excludes Evanston, Oak Park, Skokie and Stickney Township
* Provisional cases through the first quarter of 2016
† 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