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Foodborne Outbreaks
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    Foodborne Outbreaks

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    Illustration of the Listeria pathogen.

    New If you are pregnant, aged 65 or older, or have a weakened immune system, contact your healthcare provider if you have any Listeria symptoms. Click to learn more.

    Enoki mushrooms on a white background

    New Don’t eat recalled or contaminated enoki mushrooms. If you are pregnant, aged 65 or older, or have a weakened immune system, do not eat any raw enoki mushrooms. Click to learn more.

    Shop with deli meat and cheese on shelves

    New If you are pregnant, aged 65 or older, or have a weakened immune system, do not eat meat or cheese from any deli counter unless reheated to 165°F or until steaming hot. Click here to learn more.

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    Learn more about how CDC decides to issue an outbreak notice

    State and Local Partners, Federal Partners, and Food Industry Partners

    Learn more about the key partners in foodborne outbreak investigations

    Current and Past Foodborne Outbreaks
    Things to Know About Outbreak Investigations
    Outbreak Investigation Steps
    Tools for Outbreak Investigators
    Food Safety Recalls
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    Types of Data Collected

    Find out the three types of data that investigators collect during an outbreak

    2-d illustration depicting a family sitting around dinner table unknowningly eating contaminated food.
    Linking Illnesses to Outbreaks

    Learn why it takes 3–4 weeks for public health officials to link an illness to an outbreak

    Help CDC Solve Foodborne Outbreaks

    Take three steps to help us find out what food is making you or others sick

    Help Solve!
    Last Reviewed: February 28, 2023
    Source: Centers for Disease Control and Prevention, National Center for Emerging and Zoonotic Infectious Diseases (NCEZID), Division of Foodborne, Waterborne, and Environmental Diseases (DFWED)
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    • Current and Past Outbreaksplus icon
      • Active Investigations
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      • Annual Summariesplus icon
        • 2017–2020
        • 2016
      • MMWR Reports
    • Outbreak Investigation Basicsplus icon
      • Key Partners
      • Help Us Solve Outbreaks
      • Types of Data Collected
      • Issuing Outbreak Notices
      • Linking Illnesses to Outbreaks
      • Interpreting Epi Curves
    • Outbreak Investigation Stepsplus icon
      • Step 1: Detect
      • Step 2: Find
      • Step 3: Generate
      • Step 4: Test
      • Step 5: Solve
      • Step 6: Control
      • Step 7: Decide
    • Tools for Investigatorsplus icon
      • SEDRIC for Data Sharingplus icon
        • SEDRIC Overview
        • SEDRIC Data Views
      • Interview Questionnaires
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