Annual Summary: 2002 Minnesota Sexually Transmitted Disease Statistics

Download PDF version formatted for print (PDF: 180 KB/3 pages)

Overview of Statistics and Highlights:
The number of cases and rates (per 100,000 persons) for all reportable bacterial sexually transmitted diseases (STDs) for the years 1998 through 2002 are presented in Table 1 by year of diagnosis. Table 2 displays chlamydia, gonorrhea and primary/secondary syphilis case numbers and rates by residence, age, gender, and race/ethnicity for 2002. Chlamydia and gonorrhea case numbers and rates by county for 2002 are shown in Table 3.

Between 2001 and 2002 in Minnesota, the chlamydia rate increased by 21% and the gonorrhea rate increased by 13%. Portions of the increases were reporting artifacts caused by the addition of an active component to the previously passive surveillance system. Although both laboratories and physicians are required to report STDs to the Minnesota Department of Health (MDH), laboratory reports alone do not provide adequate information to include cases in the surveillance statistics. Thus, in January 2002 the MDH began cross-checking reports of laboratory test results against clinician case reports. For instances in which a positive laboratory result was reported but a corresponding clinician case report was not received within 45 days, MDH mailed a reminder letter and report form to the appropriate clinical facility. Through this process, 631 chlamydia case reports and 146 gonorrhea case reports were completed and returned to MDH. These account for a 7% and 5% increase in chlamydia and gonorrhea cases, respectively, between 2001 and 2002. The process likely accounts for even larger portions of the increases because as clinicians were made aware or reminded of the reporting requirements, more cases were reported while fewer letters and forms had to be mailed out. The number of additional case reports received due to the educational effect of the process cannot be quantified.

Between 2001 and 2002 in Minnesota, the primary/secondary syphilis rate increased by 71%. The rate increase was driven by an increase in syphilis cases among white men who have sex with men (MSM). Eighty-two cases of early syphilis (which includes primary, secondary, and early latent stages) were reported in Minnesota in 2002 compared to 49 cases in 2001. Of the 82 early syphilis cases in 2002, 70 (85%) occurred among men. Fifty-six (80%) of the men reported having sex with other men. Almost half (45%) of the MSM diagnosed with early syphilis were co-infected with HIV. Similar trends have been observed in other parts of the country. MDH is collaborating with local physicians, clinics, and community-based organizations to stem the increase.

STD rates continue to be highest in the seven-county metropolitan area, particularly in the cities of Minneapolis and St. Paul. Adolescents and young adults aged 15-24 years have the highest rates of chlamydia and gonorrhea, whereas the highest rates of primary/secondary syphilis are among persons in older age groups. Gonorrhea rates are comparable for men and women. However, due to more frequent screening among women, the rate of chlamydia infection among women is more than twice the rate among men. Rates of STDs remain elevated among communities of color. Blacks, American Indians, Asians and Hispanics typically have rates that are much higher (2 to 40 times higher) than rates for Whites, depending on the STD and racial/ethnic group.

Sources and Limitations of Data:
In Minnesota, laboratory-confirmed infections of chlamydia, gonorrhea, syphilis, and chancroid are monitored by the MDH through a combined physician and laboratory-based surveillance system. State law (Minnesota Rule 4605.7040) requires both physicians and laboratories to report all cases of these four bacterial STDs directly to the MDH. Other common sexually transmitted conditions caused by viral pathogens, such as herpes simplex virus (HSV) and human papillomavirus (HPV), are not reported to the MDH. Factors that impact the completeness and accuracy of the available data on STDs include: level of screening, accuracy of diagnostic tests, and compliance with case reporting. Thus, any changes in STD rates may be due to one of these factors, or due to actual changes in STD occurrence.

Population counts used to calculate rates by residence, by gender, and by race/ethnicity were obtained from the U.S. Census Bureau. Population counts for 1998 and 1999 were estimated by interpolation between the 1990 and 2000 Census data. Rates for 2000, 2001, and 2002 were calculated using each year’s case data and 2000 population counts. The 2000 Census data on race include the number of persons by race alone or in combination with one or more races. Thus, persons who identified themselves by more than one race are “over counted”.

Table 1. Number of Cases and Rates (per 100,000 persons) of Chlamydia, Gonorrhea, Syphilis, and Chancroid
-- Minnesota, 1998 - 2002

 

1998

1999

2000

2001

2002

Disease

Cases

Rate

Cases

Rate

Cases

Rate

Cases

Rate

Cases

Rate

Chlamydia

6,997

145

7,460

153

8,147

166

8,369

170

10,107

205

Gonorrhea

2,716

56

2,830

58

3,189

65

2,708

55

3,049

62

All Stages of Syphilis

78

1.6

72

1.5

81

1.6

135

2.7

148

3.0

- Primary/Secondary Syphilis

9

0.2

10

0.2

16

0.3

33

0.7

59

1.2

- Early Latent Syphilis

8

0.2

9

0.2

18

0.4

16

0.3

23

0.5

- Late Latent Syphilis (1)

61

1.3

52

1.1

45

0.9

81

1.6

64

1.3

- Other Syphilis

0

0.0

0

0.0

0

0.0

3

0.1

1

0.0

- Congenital Syphilis (2)

0

0.0

1

1.5

2

3.0

2

3.0

1

1.5

Chancroid

0

0.0

1

0.0

0

0.0

0

0.0

0

0.0

(1) Late latent syphilis includes neurosyphilis
(2) Congenital syphilis rate per 100,000 live births

Go to > Top of page

Table 2. Number of Cases and Rates (per 100,000 persons) of Chlamydia, Gonorrhea, and Primary/Secondary Syphilis by Residence, Age, Gender, and Race/Ethnicity — Minnesota, 2001

Table 2. Number of Cases and Rates (per 100,000 persons) of Chlamydia, Gonorrhea, and Primary/Secondary Syphilis by Residence, Age, Gender, and Race/Ethnicity -- Minnesota, 2002

 

Chlamydia

Gonorrhea

Primary/Secondary Syphilis

Group

Cases

Rate

Cases

Rate

Cases

Rate

Residence

Minneapolis

2,897

757

1,390

363

36

9.4

St. Paul

1,829

637

593

207

5

1.7

Suburban (1)

2,676

136

714

36

14

0.7

Greater Minnesota

2,705

119

352

15

4

0.2

Age

<10 yrs

8

1

1

0

0

0.0

10-14 yrs

144

38

47

13

0

0.0

15-19 yrs

3,269

873

758

202

0

0.0

20-24 yrs

3,846

1193

930

288

4

1.2

25-29 yrs

1,606

502

522

163

4

1.3

30-34 yrs

625

177

309

87

11

3.1

35-44 yrs

502

61

368

45

24

2.9

45+ yrs

107

6

114

7

16

1.0

Gender

Male

2,755

113

1,361

56

55

2.3

Female

7,352

296

1,688

68

4

0.2

Race(2)/Ethnicity

White

4,335

97

857

19

42

0.9

Black

2,931

1444

1,512

745

9

4.4

American Indian

304

375

71

88

0

0.0

Asian

412

245

49

29

0

0.0

Other

581

653

141

158

4

4.5

Unknown (3)

1,544

--

419

--

4

--

Hispanic (4)

838

584

131

91

4

2.8

TOTAL

10,107

205

3,049

62

59

1.2

(1) Suburban is defined as the seven county metropolitan area (Anoka, Carver, Dakota, Hennepin, Ramsey, Scott, and Washington Counties), excluding cities of Minneapolis and St. Paul
(2) Race categories include persons by race alone, or in combination with one or more races
(3) No comparable population data available to calculate rates
(4) Persons of Hispanic origin may be of any race

Go to > Top of page

Table 3. Number of Cases and Rates (per 100,000 persons) of Chlamydia and Gonorrhea by County of Residence -- Minnesota, 2002
County
Chlamydia
Gonorrhea
County
Chlamydia
Gonorrhea
Cases
Rate
Cases
Rate
Cases
Rate
Cases
Rate
Aitkin
2
13
0
0
Marshall
2
20
0
0
Anoka
383
128
94
32
Martin
19
87
0
0
Becker
26
87
1
3
Meeker
23
102
4
18
Beltrami
78
197
5
13
Mille Lacs
15
67
1
4
Benton
29
85
5
15
Morrison
25
79
8
25
Big Stone
4
69
0
0
Mower
90
233
24
62
Blue Earth
143
256
19
34
Murray
10
109
2
22
Brown
20
74
1
4
Nicollet
17
57
3
10
Carlton
48
152
2
6
Nobles
48
230
1
5
Carver
52
74
4
6
Norman
4
54
0
0
Cass
23
85
5
18
Olmsted
226
182
37
30
Chippewa
19
145
0
0
Otter Tail
26
45
3
5
Chisago
36
88
4
10
Pennington
18
133
1
7
Clay
38
74
8
16
Pine
27
102
4
15
Clearwater
4
47
2
24
Pipestone
4
40
2
20
Cook
2
39
0
0
Polk
16
51
0
0
Cottonwood
9
74
1
8
Pope
4
36
0
0
Crow Wing
56
102
10
18
Ramsey
2073
406
660
129
Dakota
540
152
134
38
Red Lake
2
47
0
0
Dodge
26
147
0
0
Redwood
5
30
0
0
Douglas
31
94
3
9
Renville
14
82
4
23
Faribault
10
62
2
12
Rice
79
139
7
12
Fillmore
13
62
0
0
Rock
1
10
0
0
Freeborn
33
101
2
6
Roseau
14
86
1
6
Goodhue
40
91
6
14
St. Louis
364
182
50
25
Grant
3
48
0
0
Scott
101
113
10
11
Hennepin
4041
362
1726
155
Sherburne
50
78
6
9
Houston
14
71
6
30
Sibley
10
65
0
0
Hubbard
13
71
0
0
Stearns
273
205
50
38
Isanti
28
89
8
26
Steele
46
137
2
6
Itasca
72
164
4
9
Stevens
7
70
2
20
Jackson
7
62
1
9
Swift
8
67
0
0
Kanabec
13
87
1
7
Todd
22
90
0
0
Kandiyohi
81
197
4
10
Traverse
0
0
0
0
Kittson
2
38
0
0
Wabasha
17
79
2
9
Koochiching
7
49
0
0
Wadena
7
51
0
0
Lac qui Parle

4

50
0
0
Waseca
9
46
0
0
Lake
9
81
1
9
Washington
212
105
69
34
Lake of the Woods
3
66
1
22
Watonwan
15
126
0
0
Le Sueur
16
63
0
0
Wilkin
4
56
0
0
Lincoln
0
0
0
0
Winona
56
112
5
10
Lyon
39
153
4
16
Wright
70
78
17
19
McLeod
32
92
5
14
Yellow Medicine
10
90
0
0
Mahnomen
15
289
5
96
         


Data Archive: Previous STD Annual Reports

Go to > Top of page

Content Notice: This site contains HIV or STD prevention messages that may not be appropriate for all audiences. Since HIV and other STDs are spread primarily through sexual practices or by sharing needles, prevention messages and programs may address these topics. If you are not seeking such information or may be offended by such materials, please exit this web site.

Updated Tuesday, August 05, 2014 at 10:21AM