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Toxic Pfiesteria and human health
D L Matuszak1, M Sanders, J L Taylor
1Maryland Department of Health and Mental Hygiene, USA.
Maryland Medical Journal (Baltimore, Md. : 1985)
|December 11, 1997
Summary
Toxic Pfiesteria-like organisms caused health issues in Maryland's Pocomoke River in 1997. Exposure led to memory loss, skin burning, and respiratory irritation, prompting a public health response.
Area of Science:
- Environmental Health
- Marine Biology
- Toxicology
Background:
- Pfiesteria-like organisms caused toxic blooms in the lower Pocomoke River during 1997.
- Maryland experienced significant ecological and public health challenges due to these dinoflagellate blooms.
Purpose of the Study:
- To review Maryland's experience with toxic dinoflagellate blooms.
- To assess potential human health effects associated with Pfiesteria-like organism exposure.
- To document state agency responses to the public health threat.
Main Methods:
- A medical diagnostic team evaluated individuals with high exposure to affected waters or lesioned fish.
- Symptoms and clinical findings were documented for exposed persons.
- Review of state government actions and public health advisories.
Main Results:
- Consistent complaints included memory problems, acute skin burning upon water contact, and respiratory irritation.
- Clinical examinations revealed neurocognitive deficits, specifically impacting short-term memory and learning.
- No specific pathogen was identified, but symptoms were strongly correlated with exposure.
Conclusions:
- Exposure to Pfiesteria-like organisms can cause significant human health effects, including neurological and dermatological symptoms.
- Continued reporting of illnesses linked to lesioned fish and affected waters is crucial.
- Public health monitoring and response protocols were implemented to manage the threat.
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