McHenry County Department of Health - Environmental Health
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Foodborne Illness

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If you suspect a foodborne illness, contact McHenry County Department of Health for investigation.  Staff can be reached at (815) 334-4585, Monday - Friday from 8:00am - 4:30pm.  For after hours emergencies, please call (815) 344-7421.

Visit for other tips.


Related Links 

IDPH Food- and Water-borne Illnesses


MCDH - The Communicable Disease Communique

November 2011 Communique [PDF]

November 2012 Communique [PDF]

December 2015 Newsletter [PDF]


IDPH Fact Sheets

E. coli



Norwalk Virus




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