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A number of fellows and attendings from the Department of Medicine come unexpectedly to the physician's office at the employee health service over a two-day period complaining of 1-2 days with multiple episodes of watery diarrhea. Some have had blood visible in their stool, some have had profound abdominal cramping and fever. All affected individuals attended the same buffet-style dinner party several days earlier. Stool cultures at 42 C grow microaerophilic oxidase-positive gram-negative curved rods with polar flagella. What is the most likely source of this infection?
Options:
A. Custard and potato salad dishes
B. "Carrier" food handlers
C. Milk and cream
D. Poorly canned green vegetables
E. Poorly washed salad greens
F. Poultry dishes
G. Rare red meat dishes
H. Rice dishes
I. Smoked fish
J. Soft cheeses
ANSWER
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campylobacter try now.......
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The correct answer is F. This case history describes a typical gastroenteritis due to Campylobacter jejuni, the most common bacterial gastroenteritis in the U.S. Contaminated poultry or poultry products are responsible for more than 50 percent of all infections.
Custard and potato salad (choice A) is the most likely source if the agent had been Staphylococcus
aureus, but this would have had an onset of 2 hours, and a gram-positive coccus would have been the cause.
Carriers (choice B) are not known to occur with Campylobacter, and are best known with Salmonella typhi.
Milk and cream (choice C) might contain Listeria or Mycobacterium bovis, and act to neutralize the stomach acid and thereby decrease the infectious dose of Salmonella and Shigella and others, but would not be the source of the contamination.
Poorly canned green vegetables (choice D) is the usual source of Clostridium botulinum, which,
of course, would have a different disease presentation.
Poorly washed salad greens (choice E) could be sources of infection with multiple agents (Escherichia coli, Entamoeba histolytica, Salmonella, Shigella) none of which would have this presentation.
Rare red meat dishes (choice G) would be good sources for Escherichia coli or Trichinella spiralis, which would not have this presentation.
Rice dishes (choice H) are most frequently incriminated in the transmission of Bacillus cereus, which has a 1-2 hour onset of vomiting followed by diarrhea.
Smoked fish (choice I) is a common source of Clostridium botulinum, a neurotoxin producer.
Soft cheeses (choice J) are a common source of Listeria monocytogenes, which would again have
clinical findings differing from this case history.
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its F,poultry nd campylobacter .
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hope answer helps
I thought nice one to have here
points we ought to forget.
