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Wisconsin Department of Health Services

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Disease Reporting

Legionellosis

(Legionnaires' disease, Pontiac fever)

Legionellosis is an infection caused by Legionella bacteria. The severity of the illness can be mild or result in pneumonia. Most cases occur as single isolated events, however outbreaks have been noted. There are two distinct forms of the disease: Legionnaires' disease and Pontiac fever.

General information

Legionellosis fact sheet (PDF, 16 KB)  Hmong (PDF, 16 KB)  Spanish (PDF, 47 KB)

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 F44151 (PDF, 167 KB) or by other means within 72 hours upon recognition of a case. DHS Communicable Disease Reporting

Wisconsin case reporting and public health follow-up guidelines: Legionellosis EpiNet (PDF, 23 KB)
Legionellosis case report form (PDF, 40 KB)

Contacts

Wisconsin Local Health Departments - Regional offices - Tribal agencies

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Last Revised: June 13, 2012