19. GIT Infections III

Question 1

A 62 year old pig farmer in Paraguay comes the doctor complaining of abdominal pain with diarrhea that contains blood and mucus. A stool sample is taken and is positive for trophozoite and cyst. What is true of the infectious agent?

A. Generated Pseudopodia 
B. Ciliated 
C. Flagellated 
D. Non-motile 
E. Spore forming

RFA

Answer 1

Ans. B- Ciliated- the patient is infected Balantidium coli( Fulminant colitis( bloody mucousy stool) and pig interaction)

A. Generated Pseudopodia- E. histolytica

C. Flagellated- Giardia intestinalis

D. Non-motile-No

E. Spore forming- that would be a intestinal sporozoa they don’t have trophozoites

Question 2

A 22 year old man who has been institutionalized at a mental facility has been taken to sick wing due to dehydration causes by watery diarrhea. Samples are taking in which the stool is acid fast stained and oocyst and spores are identified. Which infectious agent is associated with the given history, symptoms and labs?

A. C. belli 
B. E. histolytica 
C. Giardia 
D.C. cayetanensis 
E. B. Coli

RFA

Answer 2

Ans. A Cystoisospora belli (isospora belli)- would form spores since it is a sporozoa and was noted in our notes for being found at Day cares and psychiatric institutions in the USA.

B. C and E- all are not sporozoa so wouldn’t form spores

D. C. cayetanensis- while it is a sporozoa it was only noted in lecture for being associated with cilantro.