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NBME 24 Answers

nbme24/Block 4/Question#20

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Vibrio parahaemolyticus

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submitted by sajaqua1(353),

Vibrio cholera and V. parahaemolyticus are frequently associated with consumption of undercooked seafood like shellfish. V. vulnificus is associated with brackish water or saltwater.

A) B. cereus- vignettes tend to associate this with reheated rice at a buffet, vomiting is more common than diarrhea. B) C. jejuni- associated with undercooked food, especially chicken, or can be contracted by contact with animals. It causes inflammatory, bloody diarrhea, and may also lead to Guillan-Barre syndrome. C) C. perfringens- as a sporulator, this is associated with good that is reheated then left to germinate at room temperature for a long time before consumption. Symptoms include vomiting and diarrhea. D) S. aureus- a heat stable toxin produced by S. aureus is associated with rapid onset of vomiting, may be accompanied by diarrhea. Most often associated with dairy products and meat.

Anyone going to mention that C. perfringens has been demonstrated to have a high association with gastritis and shellfish and that parahaemolyticus is a cause of necrotizing fasciitis?

tiredofstudying  FA 2020 Pg 178. +