keepgoing
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An all-day family reunion was held on a summer day when the temperature soared to 103°F. The picnic food included potato salad, chicken, and hamburgers. The next morning, five family members experienced diarrhea, fever, and abdominal pain, which lasted for several days. One person was eventually hospitalized, and gram-negative H2S-producing rods were isolated
from the stool. Which of the following bacteria was most likely the cause?
(A) Shigella dysenteriae
(B) Shigella sonnei
(C) Shigella flexneri
(D) Salmonella typhirnuriurn
( E ) Salmonella typhi
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| a3112
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its D.. shigella doesnt form H2S
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| Karime
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D agree
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| keepgoing
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yes right guys its D ,what other species is h2s producer and what are non-h2s producers?
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| Karime
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H. pylori produces it
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Eterea ……..“Hoc in loco mors succurrere vivis gaudet”……("In this place death comes joyfully to the aid of the living" )
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| brainstem
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Shigella, yersinia - non H2S producers.
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| a3112
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yes and salmonella and proteus H2S producer..
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| GOGETA
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how do you get Salmonella typhi ?
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| brainstem
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by feco- oral route frm human carriers.
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| bactitech
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Answer is D - S. typhimirium. I think the original poster misspelled the species. Shigella are NOT H2S positive. I believe S. typhi does not produce H2S either, although I've never seen it in a patient's culture (thank goodness). All Salmonella are lactose negative, however.
H. pylori produces H2S? First I've heard of it, Karime. Please include your source. HP is very difficult to grow and requires specialized media. It will not grow on typical stool culture media.
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| a3112
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bactitech thats what i said shigella does NOT produce H2S.. thats y the ans is D.. 
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