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Wisconsin Department of Health Services

Communicable  Diseases Subjects A-Z



Sexually Transmitted Diseases


Disease Reporting


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Cryptosporidiosis is an illness caused by the protozoan Cryptosporidium, a single-celled parasite. The most common symptom is diarrhea that is usually watery and profuse, and often accompanied by abdominal cramping. Nausea, vomiting, fever, headache, and loss of appetite may also occur. Rarely, the parasite can cause an inflammation of the gall bladder or infect the lining of the respiratory tract causing pneumonia. Some persons infected with Cryptosporidium may not become ill.

General information

Cryptosporidiosis fact sheet - Hmong - Spanish  

Food Handling and Housekeeping   
Healthy swimming / Recreational water CDC   

Information for health professionals

This is a Wisconsin disease surveillance category II disease: 
Report to the patient's local public health department electronically, through the Wisconsin Electronic Disease Surveillance System (WEDSS), by mail or fax using an Acute and Communicable Disease case report F-44151 or by other means within 72 hours upon recognition of a case.
Information on communicable disease reporting

Wisconsin case reporting and public health follow-up guidelines: Cryptosporidiosis EpiNet
Wisconsin routine Enteric Follow-up Worksheet
Wisconsin State Laboratory of Hygiene Clinical Testing Reference Manual   
Wisconsin Foodborne and Waterborne Disease Outbreak Investigation Manual
Daycare exclusion criteria (Included in Wall Chart for Childhood Diseases in Group Settings) P-00735 (PDF, 1.0 MB)

Additional resources

Centers for Disease Control and Prevention website (CDC)   
United States Department of Agriculture   
Food and Drug Administration    
CDC PulseNet Program     


Wisconsin Local Health Departments - Regional offices - Tribal agencies

Last Revised: August 11, 2014