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Redtide in the Philippines

K Hartigan-Go1, D N Bateman

  • 1Wolfson Unit of Clinical Pharmacology, University of Newcastle-upon-Tyne, UK.

Human & Experimental Toxicology
|December 1, 1994
PubMed
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Red tide events cause paralytic shellfish poisoning through toxic dinoflagellates in molluscs. Effective management requires a coordinated toxicovigilance program with surveillance, warnings, and consumption bans.

Area of Science:

  • Marine Biology
  • Public Health
  • Toxicology

Background:

  • Red tide events are marine phenomena posing significant health and economic risks to coastal populations.
  • Paralytic shellfish poisoning (PSP) results from consuming molluscs contaminated with toxic dinoflagellates, leading to neurological and gastrointestinal issues.

Purpose of the Study:

  • To present four red tide incidents in the Philippines and describe their management.
  • To highlight clinical features, mortality, and lessons learned for handling such natural disasters.

Main Methods:

  • Case study analysis of four red tide incidents.
  • Description of management strategies and clinical manifestations.
  • Emphasis on toxicovigilance program components and epidemiological contributions.

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Main Results:

  • Clinical features of PSP in the Philippines included gastrointestinal and neurological symptoms, with deaths from respiratory failure.
  • Mortality rates varied from 0% to 12% across the studied red tide episodes.
  • Key elements for effective management include a central coordinating body, defined roles, inter-agency cooperation, surveillance, and prompt warnings.

Conclusions:

  • Effective toxicovigilance programs are crucial for managing red tide disasters.
  • Poisons centers can support toxicovigilance through early warnings, educational campaigns, and training.
  • Epidemiologists play a vital role in monitoring public health impacts and poisoning patterns.