Skip to main content

Blastomycosis

Blastomycosis is a fungal disease. The organism Blastomyces causes blastomycosis. The fungal disease happens when a person breathes in fungal spores from infected soil or other decomposing matter that is disturbed (e.g., digging in dirt, raking leaves).1, 2 Anyone can get blastomycosis if they have been in an area where Blastomyces lives. In Michigan, the fungus lives most often in areas surrounding the Great Lakes.2 Some wooded outdoor activities like forestry work, hunting and camping increase exposure risk.3

Infections typically cause symptoms of pneumonia.1 Infection can be severe in some people, such as those with weakened immune systems.3

Between 2018 and 2022, an average of 25 human cases of blastomycosis were reported each year to the Michigan Department of Health and Human Services (MDHHS).

Blastomycosis data are available on the MiTracking Data Portal

Quick Links