Overview
Data collected through the One Health Harmful Algal Bloom System (OHHABS) helps CDC and partners better understand harmful algal blooms and prevent associated human and animal illnesses.
OHHABS is a CDC surveillance system launched in 2016. State and territorial health departments and their designated environmental health or animal health partners can voluntarily report data to OHHABS.
OHHABS collects data on:
- Human illnesses
- Animal illnesses
- Harmful algal bloom events that occur in fresh, brackish, or salt waters
Find OHHABS data by year in the reports below.
Data reports
Data summary of the 2022 One Health Harmful Algal Bloom System Report.
Data summary of the 2021 One Health Harmful Algal Bloom System report.
Data summary of the 2020 One Health Harmful Algal Bloom System report.
Data summary of the 2019 One Health Harmful Algal Bloom System report.
MMWR. Morbidity and Mortality Weekly Report / Vol. 69 / No. 50 / P. 1889–1894
Supplemental tables and figures of the 2016-2018 One Health Algal Bloom System Report.