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Wisconsin Department of Health Services

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Baylisascaris procyonis

(Raccoon roundworm)

This is a large roundworm parasite that lives in the intestines of raccoons. The worm does not harm the raccoon, but on rare occasions can cause serious illness in humans. About half of all raccoons tested in Wisconsin have been found to be infected. Raccoons throughout Wisconsin have shown to be infected with Baylisascaris procyonis, but it is more prevalent in the southern portion of the state.

General information

Baylisascaris procyonis fact sheet - Hmong - Spanish

Contacts

Wisconsin Local Health Departments - Regional offices - Tribal agencies

Last Revised: March 04, 2014