Microbiology – MCQ 65 – Hemorrhagic colitis by E.coli

A 20 year old man presented with hemorrhagic colitis. The stool sample grew Escherichia coli in pure culture. The following serotype of E.coli is likely to be the causative agent :
A. O l57:H7
B. O 159:H7
C. O 107:H7
D. O 55:H7

Correct answer : A. O l57:H7

PG Blazer is aimed at helping undergraduate medical students in acquiring more knowledge and increasing their chance of getting admission to postgraduate courses by performing well in the post graduate medical entrance examinations. Students are requested verify the accuracy of information in standard text books. This site is not meant for any medical advice or treatment. Please contact your physician for medical advice and treatment.

Related Posts