A child presents with vomiting and abdominal pain 5 hours after eating. The most likely causative organism is:
ABacillus cereus
BCl. perfringens
CV. cholerae
DCl. botulinum
Guests at a party consumed beef broth that was boiled earlier in the day but left at room temperature for several hours. The individuals presented with symptoms of food poisoning, including watery diarrhea and abdominal cramps, 8 to 10 hours later. The symptoms lasted 24 hours. The agent that caused the symptoms is most likely which of the following?
AGram-negative bacilli
BAn opportunistic fungus
CGram-positive cocci
DSpore-forming gram-positive bacilli
A healthy 21-year-old woman develops a profuse, watery diarrhea one day after a meal of raw oysters. On physical examination, her temperature is 37.5°C. A stool sample is negative for occult blood. There is no abdominal distension or tenderness, and bowel sounds are present. Diarrhea subsides over the next three days. Which of the following organisms is most likely to produce these findings?
ACryptosporidium parvum
BEntamoeba histolytica
CStaphylococcus aureus
DVibrio parahaemolyticus
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