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Harmful Algal Bloom (HAB)-Associated Illness
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    Use the CDC resources below to learn how to prevent illnesses caused by harmful algae and cyanobacteria (also called blue-green algae).

    Fact Sheets and Reference Cards
    Facts about Cyanobacterial Blooms for Poison Center Professionals cropped cover

    Download or order fact sheets and reference cards with information about harmful algae and cyanobacteria.

    Posters
    Printable posters with tips to protect animals

    Download or order posters with tips to protect animals.

    Graphics
    Social media graphics to raise awareness and prevent illness

    Download and share CDC’s social media graphics about harmful algae and cyanobacteria.

    Social Media Toolkit
    Sample messages and downloadable graphics

    Share CDC’s sample social media messages and downloadable graphics.

    Partner Toolkit
    Resources for sharing information about the One Health Harmful Algal Bloom System (OHHABS)

    Get and share resources about the One Health Harmful Algal Bloom System (OHHABS).

    Syndicated Content
    CDC web content that you can syndicate directly onto your website without having to maintain or update it

    Syndicate CDC web content directly onto your website without having to maintain or update it.

    Images
    Download and use high-quality images of harmful algae and cyanobacteria from CDC’s Public Health Image Library

    Download and use high-quality images of harmful algae and cyanobacteria from CDC’s Public Health Image Library.

    Last Reviewed: November 29, 2022
    Source: Centers for Disease Control and Prevention
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    homeHarmful Algal Bloom-Associated Illnesses
    • General Informationplus icon
      • Avoid Harmful Algal Blooms
    • Illness and Symptomsplus icon
      • Freshwater Cyanobacterial Blooms
      • Saltwater Algal Blooms
    • Protect Yourself and Pets
    • Exposure
    • Causes and Ecosystem Impacts
    • Communication Resourcesplus icon
      • Fact Sheets and Reference Cards
      • Posters
      • Graphics
      • Social Media Toolkit
      • Partner Toolkit
    • Information for Specific Groupsplus icon
      • Animal Owners
      • Healthcare Providers
      • Veterinarians
      • Poison Center Professionalsplus icon
        • Cyanobacterial Blooms
        • Marine HABs
    • Publications, Data, and Statistics
    • One Health Harmful Algal Bloom System (OHHABS)plus icon
      • About OHHABS
      • Using OHHABS
      • Dataplus icon
        • 2020 Data
        • 2019 Data
        • 2016-2018 Data
    • CDC at Work: HABsplus icon
      • Building Public Health Capacityplus icon
        • Florida Success Stories
        • Michigan Success Stories
        • Oregon Success Stories

     

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