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Alert Message: Anyone, 6 months of age and older, is eligible to receive the COVID-19 vaccine. Find your nearest vaccination location at

WARNING: Site will be down from 8-12PM CT.

INFORMATION: Il.gov is a great site to visit.

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County Level Prevalence Maps

The Illinois Behavioral Risk Factor Surveillance System (BRFSS) is a state-based program that gathers information on physical and mental health risk factors and conditions among Illinois adults 18 years of age and older through a telephone survey. It is the primary source of information for health departments on the behaviors and conditions related to the leading causes of death for adults in the general population.

Illinois conducts the Illinois County Behavioral Risk Factor Surveys (ICBRFS) in individual counties over the course of 3-4 years in what is referred to as county rounds. County round 5 is the latest county-level data to be released. The following ten topics were completed for each county during the round and impact chronic disease prevention and control: