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

    Influenza Surveillance

    Metadata Updated: November 23, 2025

    This dataset contains the following files for California influenza surveillance data: 1) Outpatient Influenza-like Illness Surveillance Data by Region and Influenza Season from volunteer sentinel providers; 2) Clinical Sentinel Laboratory Influenza and Other Respiratory Virus Surveillance Data by Region and Influenza Season from volunteer sentinel laboratories; and 3) Public Health Laboratory Influenza Respiratory Virus Surveillance Data by Region and Influenza Season from California public health laboratories. The Immunization Branch at the California Department of Public Health (CDPH) collects, compiles and analyzes information on influenza activity year-round in California and produces a weekly influenza surveillance report during October through May. The California influenza surveillance system is a collaborative effort between CDPH and its many partners at local health departments, public health and clinical laboratories, vital statistics offices, healthcare providers, clinics, emergency departments, and the Centers for Disease Control and Prevention (CDC). California data are also included in the CDC weekly influenza surveillance report, FluView, and help contribute to the national picture of Influenza activity in the United States. The information collected allows CDPH and CDC to: 1) find out when and where influenza activity is occurring; 2) track influenza-related illness; 3) determine what influenza viruses are circulating; 4) detect changes in influenza viruses; and 5) measure the impact influenza is having on hospitalizations and deaths.

    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: See this page for license information.

    Downloads & Resources

    Dates

    Metadata Created Date November 27, 2024
    Metadata Updated Date November 23, 2025

    Metadata Source

    Harvested from State of California

    Other Data Resources

    Additional Metadata

    Resource Type Dataset
    Metadata Created Date November 27, 2024
    Metadata Updated Date November 23, 2025
    Publisher California Department of Public Health
    Maintainer
    Identifier 7c55985c-043f-42a7-8c67-e71f6c2af8ac
    Data First Published 2019-05-31T15:56:51.652747
    Data Last Modified 2025-11-07T02:24:02.154332
    Category COVID-19, Health and Human Services
    Public Access Level public
    Metadata Context https://project-open-data.cio.gov/v1.1/schema/catalog.jsonld
    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 24c5eb12-2af3-4d0f-8476-870bdb1090ac
    Harvest Source Id 3ba8a0c1-5dc2-4897-940f-81922d3cf8bc
    Harvest Source Title State of California
    License http://www.opendefinition.org/licenses/cc-by
    Source Datajson Identifier True
    Source Hash eea3bc5c2210854bd30ab2769029a9ecf48b4dd1f8c8ec58a3628ed84bab3e90
    Source Schema Version 1.1

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