The One Health Harmful Algal Bloom System (OHHABS) is a voluntary reporting system available to state and territorial public health departments and their designated environmental health or animal health partners. It collects data on individual human and animal cases of illnesses from HAB-associated exposures, as well as environmental data about HABs. The goal of OHHABS is to collect information to support the understanding and prevention of HABs and HAB-associated illnesses. The system cannot be accessed directly from the web-address. Eligible users must first contact their National Outbreak Reporting System (NORS) Site Administrator for access. Eligible users include public health professionals, environmental health professionals, and animal health professionals.

Keywords: harmful algal blooms