Sexually
Transmitted
Infections
Surveillance
Report,
2011
COOK COUNTY DEPARTMENT OF PUBLIC HEALTH
Terry Mason, MD, FACS
Chief Operating Officer, Cook County Department of Public Health
Demian Christiansen, DSc, MPH
Assistant Director, Communicable Disease Control Unit
Michael O. Vernon, DrPH
Director, Communicable Disease Control Unit
Copyright Information
All materials contained in this report are in the public domain and may be used and reprinted without special
permission; citation as to source, however, is appreciated.
Suggested Citation
Cook County Department of Public Health. Sexually Transmitted Infections Surveillance Report, 2011. Oak
Forest, IL 2013.
Cook County Department of Public Health
Protecting the Health and Environment of Suburban Cook County
Affiliate, Cook County Health and Hospitals System
Ram Raju, MD, MBA, FACS, FACHE, CEO, Cook County Health and Hospitals System
Honorable Toni Preckwinkle
President, Cook County Board of Commissioners
President, Cook County Board of Health
Communicable Disease Control Unit
Cook County Department of Public Health
15900 S. Cicero Bldg. E - 3rd Floor
Oak Forest, IL 60452
CONTENTS
ACRONYMS, ABBREVIATIONS & DEFINITIONS ........................................................................................5
REPORT HIGHLIGHTS ......................................................................................................................................6
LIST OF TABLES
Table 1. Number and Rate (per 100,000 population) of Reported Chlamydia, Gonorrhea and P&S Syphilis
Cases by Year, Suburban Cook County, 2007-2011 ...............................................................................7
Table 2. Number, Proportion and Rates (per 100,000 population) of Reported Chlamydia Cases by Selected
Characteristics, Suburban Cook County, 2009-2011 ..............................................................................9
Table 3. Number, Proportion and Rates (per 100,000 population) of Reported Gonorrhea Cases by Selected
Characteristics, Suburban Cook County, 2009-2011 ............................................................................14
Table 4. Number, Proportion and Rates (per 100,000 population) of Syphilis and Selected Characteristics
of P&S Syphilis Cases, Suburban Cook County, 2009-2011 ...............................................................19
Table 5. Map Key - Suburban Cook County Municipalities and Chicago Community Areas ...........................22
LIST OF FIGURES
Figure 1. Trends in the Number of Reported Chlamydia, Gonorrhea and P&S Syphilis Cases
Suburban Cook County, 2002-2011 ......................................................................................................7
Figure 2. Trends in Chalmydia Rates (per 100,000 population) by
Selected Public Health Jurisdictions, 2002-2011 ..................................................................................8
Figure 3. Chlamydia Rates (per 100,000 population) by Sex and Age Groups (Years),
Suburban Cook County, 2011 .............................................................................................................10
Figure 4. Chalmydia Rates (per 100,000 population) by Race/Ethnicity, Suburban Cook County, 2011 ..........10
Figure 5. Proportion of Chlamydia Cases Among Persons Aged 15-24 Years by
Race/Ethnicity, Suburban Cook County, 2011....................................................................................11
Figure 6. Chlamydia Rates (per 100,000 population) by Municipality (Suburban Cook County) or
Community Area (Chicago), 2011 .......................................................................................................12
Figure 7. Trends in Gonorrhea Rates (per 100,000 population) by
Selected Public Health Jurisdictions, 2002-2011 ................................................................................13
3
Figure 8. Gonorrhea Rates (per 100,000 population) by Sex and Age Groups (Years),
Suburban Cook County, 2011 .............................................................................................................15
Figure 9. Gonorrhea Rates (per 100,000 population) by Race/Ethnicity, Suburban Cook County, 2011 ..........15
Figure 10. Proportion of Gonorrhea Cases Among Persons Aged 15-24 Years by
Race/Ethnicity, Suburban Cook County, 2011...................................................................................16
Figure 11. Average Gonorrhea Rates (per 100,000 population) by Municipality (Suburban Cook County) or
Community Area (Chicago), 2009-2011 ............................................................................................17
Figure 12. P&S Syphilis Rates (per 100,000 population) by Selected Public Health
Jurisdictions, 2002-2011 ....................................................................................................................18
Figure 13. Proportion of P&S Syphilis Cases by Race/Ethnicity and Year of Report,
Suburban Cook County, 2009-2011 ...................................................................................................18
Figure 14. Average P&S Syphilis Rates (per 100,000 population) by Municipality
(Suburban Cook County), or Community Area (Chicago), 2009-2011 ............................................21
4
Sexually Transmitted Infections Surveillance Report, 2011
Cook County Department of Public Health
ABBREVIATIONS, ACRONYMS & DEFINITIONS
CCDPH: Cook County Department of Public Health. Jurisdiction includes all areas in Cook County, Illinois
excluding Chicago, Evanston, Oak Park, Skokie, and Stickney Township.
CDC: Centers for Disease Control and Prevention.
HIV: Human Immunodeficiency Virus, the virus that causes Acquired Immunodeficiency Syndrome (AIDS).
HP2020: Healthy People 2020. A U.S. Health and Human services-sponsored statement of national health
objectives aimed at identifying the most significant preventable threats to health and establishing national goals
to reduce these threats.
MSM: Male-to-male sexual contact.
P&S SYPHILIS: Primary and secondary stages of syphilis, highly infectious stages.
STI: Sexually Transmitted Infection. Generally, this refers to chlamydia (Chlamydia trachomatis), gonorrhea
(Neisseria gonorrhoea) or syphilis (Treponema pallidum) infection.
5
Sexually Transmitted Infections Surveillance Report, 2011
Cook County Department of Public Health
REPORT HIGHLIGHTS
CHLAMYDIA
•
In suburban Cook County, the 2011 chlamydia rate was 370.4 per 100,000 population.
•
In 2011, two-thirds of reported chlamydia cases were minorities: 50.4% of cases were non-Hispanic
Black and 17.1% were Hispanic.
•
The chlamydia rate for non-Hispanic Blacks (1,143.3 per 100,000 population) in 2011 was 16 times
higher than the rate in non-Hispanic Whites (70.7 per 100,000 population) and 3.5 times higher than
the rate in Hispanics (327.9 per 100,000 population).
•
Chlamydia rates among females were 2,272.7 and 1,845.4 per 100,000 population among those aged
20-24 years and 15-19 years, respectively.
GONORRHEA
•
In suburban Cook County, the 2011 gonorrhea rate was 91.2 per 100,000 population.
•
The average gonorrhea rate in females aged 15-44 years was 246.5 per 100,000 population, lower,
overall, than the HP2020 goal of 257.0 per 100,000 population for this age group; however, rates were
not uniform and were highest in females aged 20-24 years (609.3 per 100,000 population) and in females aged 15-19 years (571.5 per 100,000 population).
•
The average gonorrhea rate in males aged 15-44 years was 205.5 per 100,000 population, slightly
higher than the HP2020 goal of 198.0 per 100,000 population for this age group; like females, however,
rates were not uniform and were highest in males aged 20-24 years (458.5 per 100,000 population) and
in males aged 15-19 (287.8 per 100,000 population).
•
The 2011 gonorrhea rate in non-Hispanic Blacks (394.7 per 100,000 population) was 43 times higher
than the gonorrhea rate in non-Hispanic Whites (9.1 per 100,000 population) and nearly 15 times
higher than the rate in Hispanics (26.8 per 100,000 population).
PRIMARY AND SECONDARY (P&S) SYPHILIS
•
In suburban Cook County, the 2011 P&S syphilis rate was 4.0 per 100,000 population.
•
In 2011, 91.2% of P&S syphilis cases were male, corresponding to a rate of 7.6 per 100,000 population, higher than the HP2020 goal of 6.8 per 100,000 population; the P&S syphilis rate in females was
0.7 per 100,000 population, below the HP2020 goal of 1.5 per 100,000 population.
•
In 2011, 70% of reported P&S syphilis cases were non-Hispanic Black; 14.3% were non-Hispanic
White and 13.2% were Hispanic.
6
Sexually Transmitted Infections Surveillance Report, 2011
Cook County Department of Public Health
Table 1. Number and Rate (per 100,000 population) of Reported Chlamydia, Gonorrhea
and P&S Syphilis Cases by Year, Suburban Cook County, 2007-2011
2007
No.
Rate*
8,110
357.7
2,782
122.7
49
2.2
Disease
Chlamydia
Gonorrhea
P&SSyphilis
2008
No.
Rate*
8,219
362.5
2,560
112.9
57
2.5
2009
No.
Rate*
8,204
361.9
2,196
96.9
69
3.0
2010
No.
Rate*
8,825
389.2
2,093
92.3
98
4.3
2011
No.
Rate*
8,398
370.4
2,067
91.2
91
4.0
5ͲYearMedian
No.
Rate*
8,219
362.5
2,196
96.9
69
3.0
*Incidenceratescalculatedper100,000populationbasedonthe2010estimateofthepopulation(U.S.CensusBureau).
Figure 1. Trends in the Number of Reported Chlamydia, Gonorrhea and
P&S Syphilis Cases, Suburban Cook County, 2002-2011
Chlamydia
Gonorrhea
P&SSyphilis
120
9,000
100
8,000
7,000
80
6,000
,
5,000
60
4,000
40
3,000
2,000
No.P&SSSyphilisCases
No.Chlamy
N
ydia&Gon
norrheaCaases
10 000
10,000
20
1,000
0
0
2002
2003
2004
2005
2006
2007
2008
2009
2010
2011
Year
▲Figure 1. Between 2002-2011, the number of chlamydia cases increased 55%, from 5,695 cases in 2004 to 8,825 cases in 2010.
In 2011, 8,398 cases were reported, a 5% decline since the peak in 2010. P&S syphilis cases increased dramatically between 2003
(n=26) and 2010 (n=98), an incrase of 277%. P&S syphilis cases declined from 98 in 2010 to 91 in 2011, a 7% decline. Relative to
chlamydia and P&S syphilis cases, gonorrhea case reports have been relatively stable between 2002 and 2011. In 2011, 2,067 cases
were reported.
7
Sexually Transmitted Infections Surveillance Report, 2011
Cook County Department of Public Health
Figure 2. Trends in Chlamydia Rates (per 100,000 population) by Selected
Public Health Jurisdictions, 2002-2011
SuburbanCookCounty
Chicago
IL
USA
Ratep
per100,00
00Populattion
1 200
1,200
1,000
800
600
400
200
0
2002
2003
2004
2005
2006
2007
2008
2009
2010
2011
Year
▲Figure 2. Rates of chlamydia in suburban Cook County, in Illinois, and in the United States have increased between 2002 and 2011.
In 2011, Suburban Cook County had the lowest chlamydia rate, 370.4 per 100,000 population, compared to 457.6 per 100,000 population in the US overall, 506.1 per 100,000 population in Illinois and 1,031.5 per 100,000 population in Chicago.
8
Sexually Transmitted Infections Surveillance Report, 2011
Cook County Department of Public Health
Table 2. Number, Proportion and Rates (per 100,000 population) of Reported Chlamydia Cases
by Selected Characteristics, Suburban Cook County, 2009-2011
Characteristic
Gender
Male
Female
Unknown
Race/Ethnicity
NonͲHispanicWhite
NonͲHispanicBlack
Hispanic
Asian/PacificIslander
Other/Unknown
AgeGroup(Years)
<10
10Ͳ14
15Ͳ19
20Ͳ24
25Ͳ29
30
30Ͳ34
34
35Ͳ39
40Ͳ44
45Ͳ49
>50
District
North
West
Southwest
South
Unknown
Total
No.
2009
(%)
Rate*
No.
Year
2010
(%)
Rate*
No.
2011
(%)
Rate*
1,967
6,237
0
(24.0)
(76.0)
0.0
179.5
532.4
n/a
2,140
6,651
34
(24.2)
(75.4)
(0.4)
195.3
532.4
n/a
2,145
6,230
23
(25.5)
(74.2)
(0.3)
195.8
531.8
n/a
864
3,714
1,111
45
2,470
(10.5)
(45.3)
(13.5)
(0.5)
(30.1)
67.3
1,004.0
254.4
30.0
n/a
867
4,236
1,279
47
2,396
(9.8)
(48.0)
(14.5)
(0.5)
(27.2)
67.5
1,145.2
292.9
31.4
n/a
908
4,229
1,432
72
1,757
(10.8)
(50.4)
(17.1)
(0.9)
(20.9)
70.7
1,143.3
327.9
48.1
n/a
5
86
2,847
2,899
1,254
570
253
140
80
70
(1.0)
(34.7)
(35.3)
(15.3)
(6.9)
(3.1)
(1.7)
(1.0)
(0.9)
(0.9)
29.2
1,769.8
1,805.5
948.7
397.6
178.7
95.4
52.0
41.3
9.2
6
104
3,150
3,145
1,301
587
290
107
69
66
(0.1)
(1.2)
(35.7)
(35.6)
(14.7)
(6.7)
(3.3)
(1.2)
(0.8)
(0.7)
2.0
64.6
1,961.8
2,379.4
907.5
414.7
197.6
69.5
40.7
8.6
8
76
2,963
3,004
1,305
555
249
135
55
48
(0.1)
(0.9)
(35.3)
(35.8)
(15.5)
(6.6)
(3.0)
(1.6)
(0.7)
(0.6)
2.7
47.2
1,845.4
2,272.7
910.3
392.1
169.7
87.7
32.4
6.3
1,326
2,045
900
3,891
42
8,204
(16.2)
(24.9)
(11.0)
(47.4)
(0.5)
(100.0)
143.0
405.8
247.3
824.7
n/a
361.9
1,317
2,085
1,064
4,339
20
8,825
(14.9)
(23.6)
(12.1)
(49.2)
(0.2)
(100.0)
142.0
413.7
292.4
919.7
n/a
389.2
1,342
2,176
814
4,037
29
8,398
(16.0)
(25.9)
(9.7)
(48.1)
(0.3)
(100.0)
144.7
431.8
223.7
855.7
n/a
370.4
*Incidenceratescalculatedper100,000populationbasedon2010estimatesofthepopulation(U.S.CensusBureau).
▲Table 2. Sex: Between 2009 and 2011, 75% of reported chlamydia cases were female. Age Groups: In 2011 71% of reported chlamydia cases were 15-24 years of age. Race/Ethnicity: In 2011, 50.4% of reported chlamydia cases were non-Hispanic Black. In 2011,
the rate of chlamydia in non-Hispanic Blacks (1,143.3 per 100,000 population) was 3.5 times higher than the rate in Hispanics (327.8
per 100,000 population) 16 times higher than the rate in non-Hispanic Whites (70.7 per 100,000 population) and 24 times higher than
the rate in Asian/Pacific Islanders (48.1 per 100,000 population). District: Chlamydia rates were highest in the South District (855.7
per 100,000 population) followed by the West district (431.8 per 100,000 population).
9
Sexually Transmitted Infections Surveillance Report, 2011
Cook County Department of Public Health
Figure 3. Chlamydia Rates (per 100,000 population)
by Sex and Age Groups (Years), Suburban Cook County, 2011
Rateper100,000Population
4,000
10Ͳ14
3,000
2,000
1,000
MALES
1,000
10.9
15Ͳ19
AgeeGroup(Years)
0
2,000
3,000
FEMALES
82.8
695.5
20Ͳ24
3,075.2
1,111.5
25Ͳ29
3,490.8
570.7
30Ͳ34
1,239.9
252.1
35Ͳ39
529.8
149.1
40Ͳ44
189.3
93.3
81.8
45Ͳ49
29.7
ш50
6.7
Total
4,000
◄Figure 3. The chlamydia
rates for both males and
females were highest in the
20-24 year old age group
followed by those aged 15-19
years of age. However, among
those aged 15-19 years of age,
the rate in females was 4.4
times greater than the rate in
males.
35.0
5.9
195.8
531.8
Figure 4. Chlamydia Rates (per 100,000 population)
by Race/Ethnicity, Suburban Cook County, 2011
1,400
1,200
Rate
eper100,000Population
►Figure 4. The 2011
chlamydia rate in nonHispanic Blacks was 3.5
times higher than the rate
in Hispanics, 16 times
higher than the rate in
non-Hispanic Whites, and
nearly 24 times higher
than the rate in Asian.
Pacific Inslanders.
1,143.3
1,000
800
600
400
327.9
200
70.7
48.1
0
NonͲHispanicWhite
NonͲHispanicBlack
Hispanic
Asian/PacificIslander
Race/Ethnicity
10
Sexually Transmitted Infections Surveillance Report, 2011
Cook County Department of Public Health
Figure 5. Proportion of Chlamydia Cases Among Persons Aged 15-24 Years
by Race/Ethnicity, Suburban Cook County, 2011
Asian/Pacific
Islander
Islander
(n=5)
1%
NonͲHispanic
White
(n=131)
12%
Hispanic
(n=167)
15%
NonͲHispanic
Black
(n=782)
72%
▲Figure 5. In 2011, a majority of chlamydia cases reported in youth (persons aged 15-24 years) were non-Hispanic Black (72%);
15% of cases were Hispanic, 12% of cases were non-Hispanic White, and less than 1% of cases diagnosed in 2011 were Asian/Pacific
Islanders.
11
Sexually Transmitted Infections Surveillance Report, 2011
Cook County Department of Public Health
Figure 6. Chlamydia Rates (per 100,000 population) by Municipality (Suburban Cook County) or
Community Area (Chicago), 2009-2011
2
6
5
32
3
16
8
11
22
24
1
30
15
17
12
27
33
20
25
14
10
36
21
31
4
35
19
7
29
9
²
13
15
4
34
23
26
138
65
28
65
141
139
205
59
134 135
150
147
63 70
132
145
144
146
206
133
143
48
47
130
131
142
140
66
38
18
148
149
151
136
60
67
Chlamydia Rate per 100k Pop.
58
37
49
0.1 - 243.6
61
50
Chicago Community Areas
53
69
56
45
52
43
95
Chlamydia rates for Chicago
provided by the STD/HIV/AIDS
Division, Chicago Department
of Public Health.
Data for Evanston, Oak Park, Skokie
and Stickney Township provided by
the Illinois Department of Public Health.
188
72
187
186
73
185
94
76
192
194
195
200
172
173
201 202
175
181
178 179
204
180
87
75
91
77
182
99
183
120 102
115
103
108
116
109
98
126
89
101
97
119
113
129
184
122
123
80
90
174
176 177
203
96
93
198
81
79
92
93
171
196 197
84
83
88
86
165
167
168
169 170
199
74
78
190 166
191
193
51
85
162
163
189 164
159
64
55
161
157
160
44
40
42
137
158
41
54
243.7 - 889.5
155 156
46
68
153
152
154
71
57
0.0
>889.5
62
39
104
128
111
110
105
107
105
112
117
100
114
82
0
3.5
121
7
118
106
125
127
124
14 Miles
12
Sexually Transmitted Infections Surveillance Report, 2011
Cook County Department of Public Health
Figure 7. Trends in Gonorrhea Rates (per 100,000 population) by
Selected Public Health Jurisdictions, 2002-2011
SuburbanCookCounty
Chicago
IL
USA
Rateperr100,000Populatio
on
600
500
400
300
200
100
0
2002
2003
2004
2005
2006
2007
2008
2009
2010
2011
Year
▲Figure 7. over the past 10 years, gonorrhea rates in suburban Cook County have been relatively constant and were similar to rates
in the United States. In 2011, the gonorrhea rate in suburban Cook County was 91.2 per 100,000 population. The rate in the US overall
was 104.2 per 100,000 population. The 2011 gonorrhea rates in Illinois and Chicago were 132.8 and 321.1 per 100,000 population,
respectively.
13
Sexually Transmitted Infections Surveillance Report, 2011
Cook County Department of Public Health
Table 3. Number, Proportion and Rates (per 100,000 population) of Reported Gonorrhea Cases
by Selected Characteristics, Suburban Cook County, 2009-2011
Characteristic
Gender
Male
Female
U k
Unknown
Race/Ethnicity
NonͲHispanicWhite
Non Hispanic Black
NonͲHispanicBlack
Hispanic
Asian
Other/Unknown
AgeGroup(Years)
<10
10 14
10Ͳ14
15Ͳ19
20Ͳ24
25Ͳ29
30Ͳ34
35Ͳ39
40Ͳ44
45Ͳ49
>50
District
N th
North
West
Southwest
South
South
Unknown
Total
No.
2009
(%)
Rate*
No.
Year
2010
(%)
Rate*
No.
2011
(%)
Rate*
971
1,225
0
(44.2)
(55.8)
0.0
00
88.6
104.6
n/a
/
914
1,171
8
(43.7)
(55.9)
(0 4)
(0.4)
83.4
100.0
n/a
/
944
1,117
6
(45.7)
(54.0)
(0 3)
(0.3)
86.2
95.3
n/a
/
139
1,373
1
373
106
4
574
(6.3)
(62.5)
(62
5)
(4.8)
(0.2)
(26.1)
10.8
371.2
371
2
24.3
§
n/a
136
1,346
1
346
106
8
497
(6.5)
(64.3)
(64
3)
(5.1)
(0.4)
(23.7)
10.6
363.9
363
9
24.3
5.3
n/a
117
1,460
1
460
117
4
369
(6.5)
(64.3)
(64
3)
(5.1)
(0.4)
(23.7)
9.1
394.7
394
7
26.8
§
n/a
2
25
729
745
314
165
96
49
34
37
(0.1)
(1.1)
(33.2)
(33.9)
((14.3))
(7.5)
(4.4)
(2.2)
(1.5)
(1.7)
§
15.5
454.0
563.6
219.0
116.6
65.4
31.8
20.1
4.8
1
30
722
731
291
139
91
40
24
24
(0.0)
(1.4)
(34.5)
(34.9)
((13.9))
(6.6)
(4.3)
(1.9)
(1.1)
(1.1)
§
18.6
449.7
553.0
203.0
98.2
62.0
26.0
14.2
3.1
1
21
684
706
333
137
75
56
26
28
(0.0)
(1.0)
(33.1)
(34.2)
((16.1))
(6.6)
(3.6)
(2.7)
(1.3)
(1.4)
§
13.1
426.0
534.1
232.3
96.8
51.1
36.4
15.3
3.7
161
413
266
1 338
1,338
18
2,196
(7
(7.3)
3)
(18.8)
(12.1)
(60 9)
(60.9)
(0.8)
(100.0)
17
17.4
4
81.9
73.1
283 6
283.6
n/a
96.9
151
413
240
1 282
1,282
7
2,093
(7
(7.2)
2)
(19.7)
(11.5)
(61 3)
(61.3)
(0.3)
(100.0)
16
16.3
3
81.9
66.0
271 7
271.7
n/a
92.3
146
477
172
1 261
1,261
11
2,067
(7
(7.1)
1)
(23.1)
(8.3)
(61 0)
(61.0)
(0.5)
(100.0)
15
15.7
7
94.6
47.3
267 3
267.3
n/a
91.2
*Incidenceratescalculatedper100,000populationbasedonthe2010estimateofthepopulation(U.S.CensusBureau).
§Ratenotcalculatedforn<5.
▲Table 3. Sex: Between 2009 and 2011, 55% of reported gonorrhea cases were female. Race/Ethnicity: in 2011, 64% of gonorrhea
cases were in non-Hispanic Blacks; 6.5% were non-Hispanic White and 5.1% were Hispanic. The 2011 gonorrhea rate in non-Hispanic Blacks was 394.7 per 100,000, 43 times higher than the rate in non-Hispanic Whites (9.1 per 100,000 population) and nearly 15
times higher than the rate in Hispanics (26.8 per 100,000 population). Age Groups: As with chlamydia, the majority (83.4%) of cases
were 15-29 yearsof age; of these, 80% were aged 14-24 years. District: In 2011, 51% of gonorrhea cases were diagnosed in the South
Distict and 23.1% were diagnosed in the West District. The South and West districts also had the highest gonorrhea rates in 2011
(267.3 and 94.6 per 100,000 population, respectively).
14
Sexually Transmitted Infections Surveillance Report, 2011
Figure 8. Gonorrhea Rates (per 100,000 population) by Sex and
Age Groups (Years), Suburban Cook County, 2011
Rateper100,000Population
1,000
10Ͳ14
500
0
MALES
0.0
15Ͳ19
Age
eGroup(Years)
►Figure 8. As was the case
with chlamydia rates, gonorrhea
rates were highest in persons
aged 15-24 years of age. Females aged 20-24 years of had
the highest gonorrhea rate in
2011 (609.3 per 100,000 population), followed by females 15-19
years of age (571.5 per 100,000
population). The average rate
in females aged 15-44 years
of age was 246.5 per 100,000
population, lower, overall, than
the HP2020 goal of 257.0 per
100,000 population in this age
group. Among males, those aged
20-24 years had the highest gonorrhea rate (458.5 per 100,000
population), followed by males
aged 15-19 years (287.8 per
100,000 population). The average rate in males aged 15-44
years was 205.5 per 100,000
population, higher, overall, than
the HP2020 goal of 198.0 per
100,000 population in this age
group.
Cook County Department of Public Health
500
FEMALES
24.2
287.8
20Ͳ24
571.5
458.5
25Ͳ29
609.3
267.9
30Ͳ34
196.7
121.1
HealthyPeople2020goal
y
p
g for
males,15Ͳ44yearsofage:
reducegonorrhearateto
198.0per100,000population
35Ͳ39
40Ͳ44
72.9
44.6
57.6
45Ͳ49
ш50
HealthyPeople2020goal for
females,15Ͳ44yearsofage:
reducegonorrhearateto
257.0per100,000population
57.0 per 00,000 population
57.3
16.4
22.2
6.1
Total
1,000
9.0
1.7
86.2
95.3
Figure 9. Gonorrhea Rates (per 100,000 population) by Race/Ethnicity,
Suburban Cook County, 2011
◄Figure 9. The 2011
gonorrhea rate in non-Hispanic Blacks was 394.7 per
100,000, 43 times higher
than the rate in non-Hispanic Whites (9.1 per 100,000
population) and nearly 15
times higher than the rate in
Hispanics (26.8 per 100,000
population).
450
394.7
Rate
eper100,000Population
400
350
300
250
200
150
100
50
26.8
9.1
0
NonͲHispanicWhite
NonͲHispanicBlack
Hispanic
Race/Ethnicity
15
Sexually Transmitted Infections Surveillance Report, 2011
Cook County Department of Public Health
Figure 10. Proportion of Gonorrhea Cases Among Persons Aged 15-24 Years by Race/Ethnicity,
Suburban Cook County, 2011
NonͲHispanic
White(n=19)
3%
Other/Unknown
(n=102)
19%
Asian(n<5)
Asian
(n<5)
<1%
Hispanic(n=26)
5%
Non Hispanic
NonͲHispanic
Black(n=402)
73%
▲Figure 10. Among gonorrhea cases reported in 2011 who were 15-24 years of age, 73% were non-Hispanic Black, 5% were Hispanic, 3% were non-Hispanic White and less than 1% were Asian/Pacific Islanders.
16
Sexually Transmitted Infections Surveillance Report, 2011
Cook County Department of Public Health
Figure 11. Gonorrhea Rates (per 100,000 population) by Municipality (Suburban Cook County)
or Community Area, Chicago, 2011
2
6
5
32
3
16
8
11
22
24
1
30
15
17
12
27
33
20
7
29
25
14
10
36
21
31
4
35
19
9
²
13
15
4
34
23
26
138
65
28
65
141
139
205
59
134 135
150
147
63 70
132
145
144
146
206
133
143
48
47
130
131
142
140
66
38
18
148
149
151
136
60
Gonorrhea Rates per 100k Pop.
67
58
0.0
37
49
0.1 - 135.4
135.5 - 589.4
>589.4
53
69
56
45
52
43
95
188
72
187
186
73
193
51
83
93
172
175
201 202
181
178 179
204
180
87
75
91
77
Data for Evanston, Oak Park, Skokie
and Stickney Township provided by
the Illinois Department of Public Health.
182
99
183
120 102
115
103
108
116
109
98
126
89
101
97
119
113
129
184
122
123
80
90
174
173
176 177
203
96
93
200
81
79
92
86
171
198
84
88
Gonorrhea rates from Chicago
provided by the STD/HIV/AIDS
Division, Chicago Department
of Public Health.
169 170
199
74
78
165
167
168
196 197
195
194
76
190 166
192
191
185
94
85
162
163
189 164
159
64
55
161
157
160
44
40
42
137
158
41
54
50
155 156
46
61
153
152
154
71
57
68
Chicago Community Areas
62
39
104
128
111
110
105
107
105
112
117
100
114
82
0
3.5
121
7
118
106
125
127
124
14 Miles
17
Sexually Transmitted Infections Surveillance Report, 2011
Cook County Department of Public Health
Figure 12. Primary and Secondary Syphilis Rates (per 100,000 population)
by Selected Public Health Jurisdictions, 2002-2011
SuburbanCookCounty
Chicago
IL
USA
Rateper1
100,000Population
30
25
20
15
10
5
0
2002
2003
2004
2005
2006
2007
2008
2009
2010
2011
Year
▲Figure 11. Between 2002-2011, rates of primary and secondary (P&S) syphilis in suburban Cook County were typically lower than
the rates in the US overall, lower than the rates in Illinois and lower than the rates in Chicago. In 2011, the rate of P&S syphilis in suburban Cook County was 4.0 per 100,000 population. In the US overall, the rate was 4.5 per 100,000 population. The P&S syphilis rate
in Illinois was 6.9 per 100,000 population. Chicago had the highest P&S syphilis rate at 25.0 per 100,000 population, 6 times higher
than the rate in suburban Cook County. In suburban Cook County and in Chicago, P&S syphilis rates decreased somewhat from 2010
to 2011.
18
Sexually Transmitted Infections Surveillance Report, 2011
Cook County Department of Public Health
Table 4. Number, Proportion and Rates (per 100,000 population) of Syphilis Cases and Selected
Characteristics of P&S Syphilis Cases, Suburban Cook County, 2009-2011
Year
Characteristic
SyphilisStage
PrimaryandSecondary
EarlyLatent
LateLatent
Congenital¶
Total
PrimaryandSecondaryCases
Sex
Male
Female
Race/Ethnicity
NonͲHispanicWhite
NonͲHispanicBlack
Hispanic
Asian
Other/Unknown
AgeGroup(inyears)
<20
20Ͳ24
25Ͳ29
30Ͳ34
35Ͳ39
40Ͳ44
45Ͳ49
>50
District
North
West
Southwest
South
TotalP&SSyphilisCases
No.
2009
(%)
No.
2010
(%)
No.
2011
(%)
Rate*
Rate*
Rate*
69
64
83
3
219
(31.5)
(29.2)
(37.9)
(1.4)
(100.0)
3.0
2.8
3.7
§
9.7
98
53
80
6
237
(41.4)
(22.4)
(33.8)
(2.5)
(100.0)
4.3
2.3
3.5
0.3
10.5
91
80
86
7
264
(34.5)
(30.3)
(32.6)
(2.7)
(100.0)
4.0
3.5
3.8
0.3
11.6
62
7
(89.9)
(10.1)
5.7
0.6
90
8
(91.8)
(8.2)
8.2
0.7
83
8
(91.2)
(8.8)
7.6
0.7
8
47
11
0
3
(11.6)
(68.1)
(15.9)
0.0
(4.3)
0.6
3.7
0.9
0.0
§
26
61
9
2
0
(26.5)
(62.2)
(9.2)
(2.0)
0.0
2.0
4.8
0.7
§
0.0
13
64
12
1
1
(14.3)
(70.3)
(13.2)
(1.1)
(1.1)
1.0
5.0
0.9
§
§
6
15
15
8
4
7
8
6
(8.7)
(21.7)
(21.7)
(11.6)
(5.8)
(10.1)
(11.6)
(8.7)
1.0
2.4
2.4
1.3
0.6
1.1
1.3
1.0
10
24
16
7
13
7
15
6
(10.2)
(24.5)
(16.3)
(7.1)
(13.3)
(7.1)
(15.3)
(6.1)
1.6
3.9
2.6
1.1
2.1
1.1
2.4
1.0
4
25
23
11
7
6
7
8
(4.4)
(27.5)
(25.3)
(12.1)
(7.7)
(6.6)
(7.7)
(8.8)
0.6
4.1
3.7
1.8
1.1
1.0
1.1
1.3
14
17
6
32
69
(20.3)
(24.6)
(8.7)
(46.4)
(100.0)
1.5
3.4
1.6
6.8
3.0
17
28
8
45
98
(17.3)
(28.6)
(8.2)
(45.9)
(100.0)
1.8
5.6
2.2
9.5
4.3
14
25
12
40
91
(15.4)
(27.5)
(13.2)
(44.0)
(100.0)
1.5
5.0
3.3
8.5
4.0
*Incidenceratescalculatedper100,000populationbasedon2010estimateofthepopulation(U.S.CensusBureau).
¶Congenitalsyphilisratescalculatedper100,000livebirths(takenfromCommunityProfiles2003Ͳ2005).
§Ratesnotcalculatedforn<5.
►Table 4. Syphilis Stage: Between 2009 and 2011, approximately a third of cases were classified as P&S syphilis, Sex: Among P&S
syphilis cases in 2011, the overwhelming majority of cases were males (91.2%). The P&S syphilis rate in males in 2011 was 7.6 per
100,000 population, greater than the HP2020 goal for males (6.8 per 100,000 population). The P&S syphilis rate in females in 2011
was 0.7, lower than the HP2020 goal of 1.5 per 100,000 population. Race/Ethnicity: In 2011, 70.3% of reported P&S syphilis cases
were non-Hispanic Black. District: Forty-four percent (44%) of all P&S syphilis cases reported living in the South District and 27.5%
reported living in the West District.The rate of P&S syphilis in the South District was 8.5 per 100,000, more than double the 2011
average rate in suburban Cook County of 4.0 per 100,000 population.
19
Sexually Transmitted Infections Surveillance Report, 2011
Cook County Department of Public Health
Figure 13. Proportion of P&S Syphilis Cases by Race/Ethnicity and Year of Report,
Suburban Cook County, 2009-2011
ProportionofPrimarry&SecondarySyphilisCases
NonͲHispanicWhite
NonͲHispanicBlack
Hispanic
100%
90%
16
9
13
80%
70%
60%
50%
62
70
68
40%
30%
20%
10%
27
14
12
0%
2009
2010
2011
Year
▲Figure 13. Among P&S syphilis cases reported in suburban Cook County in 2011, 70% were non-Hispanic Black, 14% were nonHispanic White and 13% were Hispanic.
20
Sexually Transmitted Infections Surveillance Report, 2011
Cook County Department of Public Health
Figure 14. Average P&S Syphilis Rates (per 100,000 population by
Municipality (Suburban Cook County) and Community Area (Chicago), 2009-2011
2
6
5
32
3
16
8
11
22
24
1
30
15
17
12
27
33
20
25
14
10
36
21
31
4
35
19
7
29
9
²
13
15
4
34
23
26
138
65
28
65
141
139
205
59
134 135
150
147
63 70
132
145
144
146
206
133
143
48
47
130
131
142
140
66
38
18
148
149
151
136
60
67
P&S Syphilis Rates per 100k Pop.
58
37
49
0.0
61
27.4 - 56.3
50
Chicago Community Areas
55
69
56
45
52
43
95
188
72
187
186
73
185
94
76
192
194
195
83
93
90
174
173
201 202
175
181
178 179
204
180
87
77
182
99
183
120 102
103
108
116
109
98
126
89
101
97
119
113
129
184
122
123
115
Data for Evanston, Oak Park, Skokie
and Stickney Township provided by
the Illinois Department of Public Health.
172
176 177
75
91
80
P&S Data from Chicago provided by
the STD/HIV/AIDS Division, Chicago
Department of Public Health.
200
203
96
93
198
81
79
92
86
171
196 197
84
88
Rates for suburban Cook County
(including Evanston, Oak Park,
Skokie and Stickney Township)
and the City of Chicago are threeyear average rates for
2009-2011.
165
167
168
169 170
199
74
78
190 166
191
193
51
85
162
163
189 164
159
64
53
161
157
160
44
40
42
137
158
41
54
0.0 - 27.3
155 156
46
68
153
152
154
71
57
Rate not calculated; sample size too small
>56.3
62
39
104
128
111
110
105
107
105
112
117
100
114
82
0
3.5
121
7
118
106
125
127
124
14 Miles
21
Sexually Transmitted Infections Surveillance Report, 2011
Cook County Department of Public Health
Table 7. Map Key - Suburban Cook County Municipalities
and Chicago Community Areas
Ref#
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
City/Town/Com.Area
ArlingtonHeights
Barrington
BarringtonHills
Bartlett
BuffaloGrove
Deerfield
DesPlaines
EastDundee
Elgin
ElkGroveVillage
Glencoe
Glenview
Golf
HanoverPark
HoffmanEstates
Inverness
Kenilworth
Lincolnwood
MortonGrove
MountProspect
Niles
Northbrook
Northfield
Palatine
ParkRidge
ProspectHeights
RollingMeadows
Roselle
Schaumburg
SouthBarrington
Streamwood
Wheeling
Wilmette
Winnetka
Evanston
Skokie
Bellwood
Bensenville
Berkeley
Berwyn
Broadview
Brookfield
BurrRidge
Cicero
Countryside
ForestPark
FranklinPark
HarwoodHeights
Hillside
Hinsdale
Hodgkins
IndianHeadPark
Ref#
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
City/Town/Com.Area
LaGrange
LaGrangePark
Lyons
McCook
Maywood
MelrosePark
Norridge
Northlake
NorthRiverside
RiverForest
RiverGrove
Riverside
Rosemont
SchillerPark
StonePark
Westchester
WesternSprings
ElmwoodPark
OakPark
Stickney
ForestView
Burbank
Alsip
BedfordPark
BlueIsland
Bridgeview
ChicagoRidge
Crestwood
EvergreenPark
Frankfort
HickoryHills
Hometown
Justice
Lemont
MerrionettePark
OakLawn
OrlandHills
OrlandPark
PalosHeights
PalosHills
PalosPark
Summit
WillowSprings
Worth
Burnham
CalumetCity
CalumetPark
ChicagoHeights
CountryClubHills
Dixmoor
Dolton
EastHazelCrest
Ref#
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
City/Town/Com.Area
Flossmoor
FordHeights
Glenwood
Harvey
HazelCrest
Homewood
Lansing
Lynwood
Markham
Matteson
Midlothian
OakForest
OlympiaFields
ParkForest
Phoenix
Posen
RichtonPark
Riverdale
Robbins
SaukVillage
SouthChicagoHeights
SouthHolland
Steger
Thornton
TinleyPark
RogersPark
WestRidge
Uptown
LincolnSquare
NorthCenter
LakeView
LincolnPark
NearNorthSide
EdisonPark
NorwoodPark
JeffersonPark
ForestGlen
NorthPark
AlbanyPark
PortagePark
IrvingPark
Dunning
Montclare
BelmontCragin
Hermosa
Avondale
LoganSquare
HumboldtPark
WestTown
Austin
WestGarfieldPark
EastGarfieldPark
Ref#
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
City/Town/Com.Area
NearWestSide
NorthLawndale
SouthLawndale
LowerWestSide
Loop
NearSouthSide
ArmourSquare
Douglas
Oakland
FullerPark
GrandBoulevard
Kenwood
WashingtonPark
HydePark
Woodlawn
SouthShore
Chatham
AvalonPark
SouthChicago
Burnside
CalumetHeights
Roseland
Pullman
SouthDeering
Eastside
WestPullman
Riverdale
Hegewisch
GarfieldRidge
ArcherHeights
BrightonPark
MckinleyPark
Bridgeport
NewCity
WestElsdon
GagePark
Clearing
WestLawn
ChicagoLawn
WestEnglewood
Englewood
GreaterGrandCrossing
Ashburn
AuburnGresham
Beverly
WashingtonHeights
MountGreenwood
MorganPark
O'Hare
Edgewater
22
Sexually Transmitted Infections Surveillance Report, 2011
Cook County Department of Public Health
TECHNICAL NOTES
Cook County Department of Public Health Jurisdiction
The jurisdiction of the Cook County Department of Public Health includes all municipalities and portions
within Cook County, except for Chicago, Evanston, Oak Park, Skokie and Stickney Township, each of which
has its own state-certifi ed local health department. Throughout this report, the term, “suburban Cook County”
refers to CCDPH’s jurisdiction with the exceptions noted above.
Data Methodology
Medical providers and laboratories within suburban Cook County are required by law to report positive cases of
chlamydia, gonorrhea, and syphilis to the Cook County Department of Public Health within 7 days of diagnosis.
These case reports are then entered into a secure database and forwarded to the Illinois Department of Public
Health, providing the basis for the information presented in this report. Incidence rates were calculated using
population estimates from the U.S. Census Bureau (2010 Census).
Data Limitations
This report includes all reported cases of chlamydia, gonorrhea, and syphilis, but does not represent the entire
population of persons infected because not all infected persons have been tested or reported. Frequently, there
is a considerable lag between the time a person is diagnosed with an STI and the time the local health department receives the report. Additionally, persons with asymptomatic STIs, such as chlamydia, may be underrepresented in surveillance reports because many such individuals may not seek care, may remain undiagnosed,
and, consequently, unreported.
23