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Signs & Symptoms

Increase in Vibrio parahaemolyticus illnesses associated with consumption of shellfish from several Atlantic coast harvest areas, United States, 2013

  • Symptoms of Vibrio parahaemolyticus infection usually occur within 24 hours (range, 4-96 hours) after ingesting the bacteria.
  • Symptoms of Vibrio parahaemolyticus infection may include:
    • Watery diarrhea
    • Abdominal cramps
    • Nausea
    • Vomiting
    • Fever
    • Headache
    • Bloody diarrhea

Treatment

  • Illness typically lasts 1 to 7 days. Treatment is not necessary in most cases. Severe illness is rare and occurs most often in persons with weakened immune systems.
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