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    • This is a Non-Federal dataset covered by different Terms of Use than Data.gov.

    Respiratory Virus Wastewater Surveillance

    Metadata Updated: November 22, 2025

    Concentrations of respiratory viruses in the Chicago sewer system as measured at seven sewershed sites since February 2022. In addition to SARS-CoV-2 (the virus that causes COVID-19), concentration data is also available for Respiratory Syncytial Virus (RSV), and influenza virus (types A and B).

    Generally, two samples are collected from each site during each week of the year. Concentration data reflect within-site and overall averages of this data each week. Because respiratory viruses are shed in human feces, tracking this data can help predict changes in disease trends and better understand the epidemiology of these common respiratory viruses in Chicago.

    Please note that one of the "sites" listed is "All sites," which combines the individual sites. Care should be taken when summing or otherwise aggregating rows to avoid double counting.

    These data are updated weekly and displayed on the Chicago Department of Public Health’s Respiratory Illness Dashboard.

    This dataset replaces COVID-19 Wastewater Detection, which will no longer be updated. See https://data.cityofchicago.org/stories/s/Wastewater-Surveillance-Datasets-3-5-2025/sihu-d8va for more information.

    Access & Use Information

    Public: This dataset is intended for public access and use. Non-Federal: This dataset is covered by different Terms of Use than Data.gov. License: No license information was provided.

    Downloads & Resources

    Dates

    Metadata Created Date March 8, 2025
    Metadata Updated Date November 22, 2025

    Metadata Source

    Harvested from Chicago JSON

    Other Data Resources

    Additional Metadata

    Resource Type Dataset
    Metadata Created Date March 8, 2025
    Metadata Updated Date November 22, 2025
    Publisher data.cityofchicago.org
    Maintainer
    Identifier https://data.cityofchicago.org/api/views/4tzt-ir6h
    Data First Published 2025-02-24
    Data Last Modified 2025-11-22
    Category Health & Human Services
    Public Access Level public
    Metadata Context https://project-open-data.cio.gov/v1.1/schema/catalog.jsonld
    Metadata Catalog ID https://data.cityofchicago.org/data.json
    Schema Version https://project-open-data.cio.gov/v1.1/schema
    Catalog Describedby https://project-open-data.cio.gov/v1.1/schema/catalog.json
    Harvest Object Id ff185387-4686-4571-a175-bf66c0578276
    Harvest Source Id 7590e386-229e-453a-8e53-6f18e200e421
    Harvest Source Title Chicago JSON
    Homepage URL https://data.cityofchicago.org/d/4tzt-ir6h
    Source Datajson Identifier True
    Source Hash 6fcf7e69b9db851dc271a9f3bede6fd11d0016c7bacefcece0e2e7cf5d43a505
    Source Schema Version 1.1

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