Influenza Statistics

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Infectious Disease Epidemiology, Prevention and Control Division
651-201-5414
IDEPC Comment Form

Contact Info

Infectious Disease Epidemiology, Prevention and Control Division
651-201-5414
IDEPC Comment Form

Outpatient Data
Situation Update for Influenza

Updated 10/9/2025
Updated weekly on Thursdays at 11 a.m., unless noted otherwise.

Influenza Situation Update Home:
Hospitalizations  |  Mortality (Deaths)  |   Outpatient  |  Laboratory

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Outpatient Health Care Visits Due to Influenza-Like Illness (ILI)
Outpatient Health Care Visits due to Influenza-Like Illness (ILI) by Region
Weekly Percent of Health Care Visits Due to Influenza-Like Illness (ILI) by Age Group

MDH participates in ILINet, the national CDC-led surveillance system for outpatient influenza-like illness (ILI). We collaborate with health care providers who report the total number of patients seen and the total number of those patients presenting with ILI. This helps us track respiratory illness visits that aren’t severe enough to require hospitalization. ILI data may capture visits due to viruses other than influenza. ILI is defined as fever with a cough and/or sore throat. 

Outpatient Health Care Visits Due to Influenza-Like Illness (ILI)

Downloadable data: Outpatient Health Care Visits Due to Influenza-Like Illness (ILI) (CSV)

  • MN baseline is valid for current season only, do not compare to previous flu seasons. The baseline is calculated by averaging the ILI percent for non-influenza weeks over the recent seasons and adding two standard deviations. Non-influenza weeks account for less than 2% of the season’s total flu-positive specimens tested at Public Health Labs in HHS Region 5. Weeks where ILI % is above baseline reflect weeks with excess health care visits due to ILI.

Outpatient Health Care Visits due to Influenza-Like Illness (ILI) by Region

Downloadable data: Outpatient Health Care Visits due to Influenza-Like Illness by Region (CSV)

  • The Twin Cities metro includes the 7-county metropolitan area (Anoka, Carver, Dakota, Hennepin, Ramsey, Scott, and Washington counties). Greater MN includes all counties in Minnesota that are not part of the 7-county metropolitan area. Statewide includes data for all counties in Minnesota.
  • Map of county distribution within regions/districts: Map of Field Services Epidemiologists

Weekly Percent of Health Care Visits Due to Influenza-Like Illness (ILI) by Age Group

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Last Updated: 10/09/2025