17. GI Infections- Inflammatory diarrhea -2

Question 1

Becky a 24 year old college student has just returned from a 4 month trip to Mexico to work as a volunteer teacher. Since she has returned she has been complaining of diarrhea and also has a noticeable rose-coloured rash on her trunk. Lab testing is done revealing a motile, gram -, non-lactose fermenting H2S producing organism. Given Becky’s history and clinical presentation what is her likely infection.

A.  S. Typhimurium
B.  S. Typhi
C.  S. Enteritidis 
D.  S. Newport
E.   S. Cholerarius 

RFA

Answer 1

Ans. B. S. Typhi- these are Salmonella species but S. Typhi is the only one that causes typhoid fever ( macular rash and travel history to endemic area (mexico))

Question 2

A 29 year old women who works on a farm comes to the doctor with complaints of bloody and water diarrhea for the past week. Testing is done showing colonies of small curved-spiral rods that are gram -, motile, oxidase + and do not ferment CH2O and fail to grow at below 25 C. What complications should the doctor be most concerned with due to this infectious agent?

A. Meningitis 
B. Necrotizing wound infections 
C. Typhoid Fever 
D. Jaundice 
E. Guillain-Barre' Syndrome

RFA

Answer 2

ANS. E the described infections is C. Jejuni, which has the known complication of Guillain Barre

A. Meningitis- E. Coli

B. Necrotizing wound infections- Vibrio vulnificus

C. Typhoid Fever- S. Typhi

D. Jaundice- Hepatitis