A 23-Year-Old Who Just Returned from a 2-Week Missionary Trip

Multiple Choice

A 23-year-old who just returned from a 2-week missionary trip to rural Haiti presents with a 2-day history of watery diarrhea. What is most likely causing his problem?

A) A bacterium producing an enterotoxin that is also an exotoxin
B) A bacterium producing an enterotoxin that is also an endotoxin
C) A bacterium that is invading tissue
D) A bacterium that is invading and producing an exotoxin