McHenry County Department of Health

Health Statistics and Epidemiology


Epidemiology is the study of the distribution of disease and factors affecting the health of populations with the goal of preventing disease and promoting health. At McHenry County, the epidemiologist’s primary role is to conduct disease surveillance, investigate and describe disease outbreaks, analyze data to determine risk factors for adverse health outcomes, and plan for and respond to public health emergencies. 

McHenry County Healthy Community Study 2014

Influenza Surveillance


Infectious Disease Presentations


Monthly Reportable Conditions

Other County, State and National health statistics can be found at the following websites:

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