Chicago Influenza and Respiratory Virus Surveillance Report

The Chicago Department of Public Health provides weekly reports that detail the current flu risk, which influenza strains are circulating, and where can you get more information. Beginning in December 2021, CDPH expanded laboratory surveillance to include other respiratory viruses besides influenza; the updated report is now called the Chicago Influenza and Respiratory Virus Surveillance Report.

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Historical and Seasonal Summary Reports

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State and National Flu Information & Resources

Visit to get more information about the Flu in Illinois and nationwide. This website provides valuable resources and health information, including important information about seasonal flu and flu prevention as well as hundreds of resources from trusted sources such as the Centers for Disease Control and Prevention, United States Health and Human Services and the World Health Organization.