Syphilis Outbreak Response and Case Counts - Minnesota Dept. of Health

Syphilis Outbreak Response and Case Counts

Minnesota is currently experiencing a syphilis outbreak in the Duluth area. Case counts specific to each outbreak can be found below. Minnesota syphilis case counts by county shows the incidence of new syphilis cases compared to previous years.

Partners can use or adapt these resources and tools for syphilis outbreak prevention and response in Minnesota.

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The table below has three columns representing the current year and two comparison years. The 2022 column shows new syphilis diagnoses reported to MDH by the year to date shown (YTD). The 2019, 2020, and 2021 columns show total cases of syphilis for each calendar year. 2021 data is now available. For the most recent complete year of data available, review Minnesota's STD Statistics.

As of Aug. 31, 2022:

MN County Syphilis Diagnoses 2019 Syphilis Diagnoses 2020 Syphilis YTD 2021* Syphilis YTD 2022**
Aitkin 2 2 0 2
Anoka 40 42 48 50
Becker 11 13 12 11
Beltrami 100 91 68 39
Benton 11 3 4 4
Big Stone 0 1 0 0
Blue Earth 9 17 7 8
Brown 0 0 2 0
Carlton 3 3 8 5
Carver 3 8 10 0
Cass 35 17 26 15
Chippewa 0 0 0 0
Chisago 1 3 2 5
Clay 9 12 8 7
Clearwater 7 4 4 1
Cook 0 0 0 0
Cottonwood 2 0 0 3
Crow Wing 5 3 9 3
Dakota 57 47 52 55
Dodge 0 0 0 3
Douglas 0 0 4 0
Faribault 1 2 3 1
Fillmore 0 1 0 0
Freeborn 0 3 2 0
Goodhue 3 5 2 2
Grant 1 0 0 0
Hennepin 510 489 655 534
Houston 1 0 0 0
Hubbard 1 3 5 2
Isanti 1 1 9 2
Itasca 5 11 9 10
Jackson 0 0 1 0
Kanabec 0 1 1 1
Kandiyohi 2 1 3 7
Kittson 0 0 0 1
Koochiching 1 0 1 1
Lac Qui Parle 0 0 0 1
Lake 0 1 1 1
Lake of the Woods 0 0 0 0
Le Sueur 5 1 3 2
Lincoln 0 0 2 0
Lyon 1 0 1 1
Mahnomen 2 6 10 6
Marshall 2 3 0 0
Martin 1 1 3 2
McLeod 3 2 9 2
Meeker 2 1 0 1
Mille Lacs 5 4 3 6
Morrison 0 1 4 2
Mower 5 4 4 9
Murray 0 0 0 0
Nicollet 4 1 1 1
Nobles 6 1 3 2
Norman 0 0 1 0
Olmsted 17 10 19 10
Otter Tail 4 6 6 2
Pennington 5 0 0 2
Pine 3 2 4 5
Pipestone 0 1 1 0
Polk 2 2 1 2
Pope 2 1 0 1
Ramsey 146 138 224 162
Red Lake 0 4 0 0
Redwood 0 1 1 1
Renville 1 2 1 4
Rice 4 2 11 3
Rock 1 0 0 1
Roseau 0 1 5 0
Scott 17 19 29 20
Sherburne 4 8 17 7
Sibley 2 2 3 1
St. Louis 12 28 60 45
Stearns 12 22 30 33
Steele 2 0 5 1
Stevens 0 0 1 0
Swift 0 0 0 0
Todd 0 3 6 3
Traverse 0 0 0 0
Wabasha 0 0 0 1
Wadena 0 1 1 1
Waseca 4 1 9 5
Washington 18 23 21 15
Watonwan 0 0 0 2
Wilkin 0 1 0 3
Winona 1 2 3 1
Wright 12 6 4 11
Yellow Medicine 1 0 0 0
Total 1,127 1,095 1,462 1,150

*2021 data is now available. For the most recent complete year of data available, review Minnesota's STD Statistics.
**Cases reported to MDH as of Aug. 31, 2022, which includes cases from Jan. 1 - Aug. 31, 2022 (YTD). By county table does not include congenital syphilis cases.

Minnesota congenital syphilis (CS) cases* 2019-2022.

  CS Diagnoses 2019 CS Diagnoses 2020 CS Diagnoses YTD 2021** CS Diagnoses YTD 2022***
Total congenital cases 21 7 15 9

*Congenital syphilis (CS) is a disease that occurs when a mother with syphilis passes the infection on to her baby during pregnancy. For more information about the CS case defining criteria, visit CDC: Syphilis (Treponema pallidum) Case Definitions.

**2021 data is now available. For the most recent complete year of data available, review Minnesota's STD Statistics.

***Cases reported to MDH from Jan. 1 - Aug. 31, 2022 (YTD).

An outbreak has been declared among any reported primary, secondary, early latent, and congenital syphilis cases. These cases were diagnosed after September 1, 2019 residing in the Duluth area* at time of diagnosis or reported cases of syphilis that is epidemiologically linked to cases that are part of the outbreak.

*Duluth area is the 30-mile radius around the city of Duluth.

As of Sept. 20, 2022
Data are preliminary and may change as reports are received.

Affected county Counts
Carlton 9
Lake 2
Saint Louis 85

Action steps for providers include:

Updated Wednesday, 21-Sep-2022 12:54:59 CDT