Which description best matches Staphylococcus aureus food poisoning?

Which description best matches Staphylococcus aureus food poisoning?

• A. Noninvasive enterotoxin-mediated vomiting and watery diarrhea with no fecal WBCs
• B. Invasive infection with bloody stools
• C. Giardiasis causing greasy stools
• D. Cholera with rice-water stools

Answer: (A)

Staphylococcus aureus food poisoning is defined by toxin-mediated, noninvasive disease. Preformed enterotoxins in contaminated food trigger abrupt vomiting and watery diarrhea within a few hours after ingestion, and the stool typically lacks fecal leukocytes because the bacteria do not invade the intestinal mucosa. This rapid, toxin-driven illness contrasts with invasive infections that cause inflammatory diarrhea with leukocytes in the stool, Giardia infection that produces greasy, malabsorption-related stools, or cholera, which causes massive watery (rice-water) diarrhea from a different toxin. So the description of rapid vomiting and watery diarrhea without fecal leukocytes best matches Staphylococcus aureus food poisoning.

Staphylococcus aureus food poisoning is defined by toxin-mediated, noninvasive disease. Preformed enterotoxins in contaminated food trigger abrupt vomiting and watery diarrhea within a few hours after ingestion, and the stool typically lacks fecal leukocytes because the bacteria do not invade the intestinal mucosa. This rapid, toxin-driven illness contrasts with invasive infections that cause inflammatory diarrhea with leukocytes in the stool, Giardia infection that produces greasy, malabsorption-related stools, or cholera, which causes massive watery (rice-water) diarrhea from a different toxin. So the description of rapid vomiting and watery diarrhea without fecal leukocytes best matches Staphylococcus aureus food poisoning.