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Histoplasmosis

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Histoplasmosis is a fungal disease. The organism Histoplasma causes histoplasmosis.1 The fungal disease happens when a person breathes in fungal spores from infected soil or other decomposing matter that is disturbed (digging in dirt, raking leaves, etc.). Infected soil often contains bird or bat droppings. Histoplasma is found in some central and eastern states including Michigan.2

Most people who breathe in Histoplasma spores do not get sick. Those people who do get sick may develop fever, cough and fatigue. Most people get better on their own without treatment. Infection can be severe in some people, such as those with weakened immune systems.3

Between 2016-2020, an average of 186 human cases of histoplasmosis were reported each year to the Michigan Department of Health and Human Services (MDHHS).4

Histoplasmosis data are available on the MiTracking Data Portal.