Environmental Public Health Tracking: Immunization Data

Immunizations, also called vaccinations, help prevent diseases like measles, chickenpox, COVID-19, and the flu. Public health professionals track immunization data in order to identify areas of need and plan disease prevention efforts.

Return to the Data Dashboards page if you'd like to select a different topic.

For more Wisconsin immunization data, visit the immunizations data dashboard collection.

Frequently asked questions

Immunizations, or vaccinations, improve our bodies' ability to fight off disease.

The CDC (Centers for Disease Control and Prevention) explains how vaccines prevent diseases on their website.

One aim of the National Environmental Public Health Tracking Network is to host data that researchers can use to better understand potential links between the environment and disease. Some diseases that are preventable by vaccines have clear links to the environment and to environmental health. For example, tetanus (lockjaw) is caused by bacteria found in soil and dust. Additionally, people living with asthma are at higher risk for severe disease and complications from influenza (flu) or COVID-19, therefore, flu and COVID vaccination is especially important for this population.

Offering easy access to immunization data will allow researchers to identify and better understand the relationship between the environment and vaccine-preventable diseases and how immunization impacts these relationships.

Tracking immunization rates gives public health professionals a better understanding of how many people in a county have had their recommended vaccines.

With Environmental Public Health Tracking, we can monitor what percentage of people have their recommended vaccines and can use that information to educate our communities and plan prevention efforts.

The source of the data is the Wisconsin Immunization Registry.

The Wisconsin Immunization Program uses data from the Wisconsin Immunization Registry to tabulate rates by each type of immunization and sends this information to the Wisconsin Environmental Public Health Tracking Program.

The dashboards above track the influenza and COVID-19 vaccines.

More data are available on the DHS Immunizations page.

The data source is the Wisconsin Immunization Registry (WIR). Border counties with residents who receive immunizations in states that do not share data to the WIR might have higher immunization rates than reflected.

Immunization data details

Data source: The Wisconsin Immunization Registry (WIR)

Vaccination administration: The cumulative number of vaccines administered.

Vaccine dose: One vaccine dose is one vaccine product (like a shot).

Vaccination coverage: An estimated percentage of the whole population who have received a COVID-19 vaccine. This helps us understand how well communities are protected from COVID-19. It also helps us see which areas and groups are less protected.

Population estimates: Wisconsin Interactive Statistics on Health (WISH) query system totals. Data shown are subject to change. Some examples of corrections or updates that affect an area’s coverage include:

  • Removing duplicates or merging and consolidation of records
  • Updating a patient's address to a different county or state.

Explore definitions and explanations of terminology found on the dashboards, like age-adjusted rate and confidence intervals.

Glossary

 
Last revised May 7, 2025