Question

A 65-year-old who recently returned from Southeast Asia presents with 2 weeks of watery diarrhoea, fever, and abdominal pain. Stool examination is negative for common pathogens. A colonoscopy reveals flask-shaped ulcers in the colon. Which pathogen is likely responsible?

Accepted Answer

A. Entamoeba histolytica

Answer

B. Giardia lamblia

Answer

C. Shigella dysenteriae

Answer

D. Vibrio cholerae

Answer

E. Salmonella typhi

Practice question

A 65-year-old who recently returned from Southeast Asia presents with 2 weeks of watery diarrhoea, fever, and abdominal pain. Stool examination is negative for common pathogens. A colonoscopy reveals flask-shaped ulcers in the colon. Which pathogen is likely responsible?