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Blue-Green Algae: Resources for Health Professionals

Find resources below for clinical and public health professionals about blue-green algae-related illness.

Doctor holding clipboard with papers discussing medical form with patient

Aluminum blue-green algae signage is available for local public health, tribal, and select DNR authorities to purchase. Email the Harmful Algal Blooms (HAB) Program at for ordering instructions.

Examples of blue-green algae signage

HAB Program newsletters

Sign up to receive our Harmful Algal Blooms Program newsletter

If you are a public health or environmental health specialist who would like to receive the monthly newsletter, please email and ask to be added to the list.

How to report a suspect case of blue-Green Algae (cyanobacteria) poisoning

Health care providers should report any suspected human cases of cyanobacteria and cyanotoxin poisoning electronically through WEDSS, or by mailing, or faxing a completed Acute and Communicable Disease Case Report, F-44151 (PDF) to the address on the form.

Last revised February 23, 2024