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A 48-Year-Old Man Comes to the Emergency Department Due to the Sudden

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A 48-year-old man comes to the emergency department due to the sudden onset of nausea, vomiting, and cramping abdominal pain.  The patient has also had 2 episodes of watery diarrhea.  The symptoms began 4 hours after eating at a buffet restaurant, and his sister, who had the same food, experienced similar symptoms.  The patient was recently diagnosed with hemochromatosis and is receiving periodic phlebotomy.
Vital signs are within normal limits with no orthostatic changes.  The abdomen is soft with mild, generalized tenderness.  There is no guarding, rebound tenderness, or hepatosplenomegaly.  Bowel sounds are increased.
Laboratory results are as follows:
A 48-year-old man comes to the emergency department due to the sudden onset of nausea, vomiting, and cramping abdominal pain.  The patient has also had 2 episodes of watery diarrhea.  The symptoms began 4 hours after eating at a buffet restaurant, and his sister, who had the same food, experienced similar symptoms.  The patient was recently diagnosed with hemochromatosis and is receiving periodic phlebotomy. Vital signs are within normal limits with no orthostatic changes.  The abdomen is soft with mild, generalized tenderness.  There is no guarding, rebound tenderness, or hepatosplenomegaly.  Bowel sounds are increased. Laboratory results are as follows:   Which of the following is the most likely causative organism of this patient's current illness? A) Campylobacter jejuni B) Clostridium perfringens C) Enterotoxigenic Escherichia coli D) Staphylococcus aureus E) Vibrio parahemolyticus Which of the following is the most likely causative organism of this patient's current illness?

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