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

As of August 31, 2021:

MN County Syphilis Diagnoses 2019 Syphilis Diagnoses 2020* Syphilis YTD 2021**
Aitkin 2 2 0
Anoka 40 42 22
Becker 11 13 7
Beltrami 92 90 50
Benton 11 3 1
Big Stone 0 1 0
Blue Earth 9 17 2
Brown 0 0 1
Carlton 3 3 6
Carver 3 8 2
Cass 35 16 13
Chippewa 0 0 0
Chisago 1 3 0
Clay 8 12 1
Clearwater 7 4 3
Cook 0 0 0
Cottonwood 2 0 0
Crow Wing 5 3 6
Dakota 57 46 22
Dodge 0 0 0
Douglas 0 0 2
Faribault 1 2 1
Fillmore 0 1 0
Freeborn 0 3 0
Goodhue 3 5 2
Grant 1 0 0
Hennepin 504 487 320
Houston 1 0 0
Hubbard 1 3 3
Isanti 1 1 3
Itasca 5 10 2
Jackson 0 0 1
Kanabec 0 1 1
Kandiyohi 2 1 0
Kittson 0 0 0
Koochiching 1 0 0
Lac Qui Parle 0 0 0
Lake 0 1 0
Lake of the Woods 0 0 0
Le Sueur 4 1 0
Lincoln 0 0 0
Lyon 1 0 0
Mahnomen 2 6 6
Marshall 2 2 0
Martin 1 1 2
McLeod 3 2 5
Meeker 2 1 0
Mille Lacs 5 4 2
Morrison 0 1 0
Mower 5 4 4
Murray 0 0 0
Nicollet 3 1 1
Nobles 6 1 1
Norman 0 0 0
Olmsted 16 10 9
Otter Tail 4 6 1
Pennington 5 0 0
Pine 3 2 2
Pipestone 0 1 0
Polk 2 2 1
Pope 2 1 0
Ramsey 143 137 87
Red Lake 0 4 0
Redwood 0 1 0
Renville 1 2 0
Rice 4 2 4
Rock 1 0 0
Roseau 0 1 3
Scott 17 19 8
Sherburne 4 8 3
Sibley 2 2 3
St. Louis 12 28 31
Stearns 12 22 8
Steele 2 1 2
Stevens 0 0 0
Swift 0 0 0
Todd 0 3 4
Traverse 0 0 0
Wabasha 0 0 0
Wadena 0 1 1
Waseca 4 1 5
Washington 19 23 7
Watonwan 0 0 0
Wilkin 0 1 0
Winona 1 2 1
Wright 12 6 2
Yellow Medicine 1 0 0
Total 1,107 1,088 674

*2020 data is now available. For the most recent complete year of data available, review Minnesota's STD Statistics.
**Cases reported to MDH as of August 31, 2021, which includes cases from January 1-August 31, 2021 (YTD). By county table does not include congenital syphilis cases.

Minnesota congenital syphilis (CS) cases* 2019-2021.

  CS Diagnoses 2019 CS Diagnoses 2020** CS Diagnoses YTD 2021***
Total congenital cases 21 7 10

*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) 2018 Case Definition.

**2020 data is now available. For the most recent complete year of data available, review Minnesota's STD Statistics.

***Cases reported to MDH from January 1- August 31, 2021 (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 October 12, 2021
Data are preliminary and may change as reports are received.

Affected county Counts
Carlton 6
Lake 1
Saint Louis 48

Action steps for providers include:

Updated Wednesday, 13-Oct-2021 07:54:59 CDT