At a glance
Use the following resources to help prevent and respond to harmful algal bloom-associated illnesses.

Resources
Outbreak investigations
- Investigating Harmful Algal Blooms section (page 30) in the Waterborne Disease Outbreak Investigation Toolkit | CDC
Communications
- Communication Resources | CDC
- Social Media Toolkit | CDC
- : Order free printed copies of select materials by choosing "Harmful Algal Blooms" on the dropdown menu next to "Program."
- : Download and use high-quality images of harmful algae and cyanobacteria.
- Drinking Water Advisory Communication Toolkit | CDC
Data and reporting
- Data: The One Health Harmful Algal Bloom System (OHHABS) | CDC
- Participate in OHHABS | CDC
- OHHABS reporting infographic | CDC
General resources
Clinical resources
- Clinical Overview of Harmful Algal Bloom-Associated Illnesses | CDC
- For Veterinarians: Harmful Algal Bloom-Associated Illnesses | CDC