Which organism is classically linked to rose spots on the torso in typhoid fever?

Which organism is classically linked to rose spots on the torso in typhoid fever?

• A. Salmonella typhi
• B. Shigella dysenteriae
• C. Vibrio vulnificus
• D. Escherichia coli

Answer: (A)

Rose spots are a classic finding in typhoid fever, which is caused by Salmonella typhi. These are small, blanching pink-to-red macules on the trunk, especially the chest and abdomen, that often appear in the second week of illness. They reflect involvement of the small dermal vessels during bacteremia with Salmonella typhi and help distinguish typhoid fever from other febrile illnesses. The other bacteria listed cause different syndromes—for example, Shigella dysenteriae causes dysentery without this characteristic trunk rash, Vibrio vulnificus is known for severe wound infections or seafood-associated gastroenteritis, and certain E. coli infections do not produce rose spots.

Rose spots are a classic finding in typhoid fever, which is caused by Salmonella typhi. These are small, blanching pink-to-red macules on the trunk, especially the chest and abdomen, that often appear in the second week of illness. They reflect involvement of the small dermal vessels during bacteremia with Salmonella typhi and help distinguish typhoid fever from other febrile illnesses. The other bacteria listed cause different syndromes—for example, Shigella dysenteriae causes dysentery without this characteristic trunk rash, Vibrio vulnificus is known for severe wound infections or seafood-associated gastroenteritis, and certain E. coli infections do not produce rose spots.