A 32-year-old woman comes to the emergency department with a 2-day history of abdominal pain and diarrhea. She has had about 8 voluminous stools per day, some of which were bloody. She visited an international food festival three days ago. She takes no medications. Her temperature is 39.5°C (103.1°F), pulse is 90/min, and blood pressure is 110/65 mm Hg. Examination shows a tender abdomen, increased bowel sounds, and dry mucous membranes. Microscopic examination of the stool shows polymorphonuclear leukocytes. Stool culture results are pending. Which of the following most likely caused the patient's symptoms?
AHome-canned vegetables
BYogurt dip
CReheated rice
DToxic mushrooms
EOmelette
A 12-year-old boy presents to the emergency room with difficulty breathing after several days of severe sore throat. Further history reveals that his family immigrated recently from Eastern Europe and he has never previously seen a doctor. Physical exam shows cervical lymphadenopathy with extensive neck edema as well as the finding shown in the image provided. You suspect a bacteria that causes the disease by producing an AB type exotoxin. Which of the following is the proper medium to culture the most likely cause of this infection?
AThayer-Martin Agar
BCharcoal Yeast Agar
CTellurite Agar
DEaton's Agar
EBordet-Gengou Agar
A 30-year-old woman comes to the emergency department because of fever, watery diarrhea, and abdominal cramping for the past 24 hours. She recently went to an international food fair. Her temperature is 39°C (102.2°F). Physical examination shows increased bowel sounds. Stool cultures grow gram-positive, spore-forming, anaerobic rods that produce alpha toxin. The responsible organism also causes which of the following physical examination findings?
ADiffuse, flaccid bullae
BSubcutaneous crepitus
CFacial paralysis
DRose spots
EPetechial rash
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