Volunteer Studies Are Used to Determine the Infectious Dose of Salmonella

Volunteer studies are used to determine the infectious dose of Salmonella required to cause gastroenteritis.  The curve obtained during the studies is shown in the diagram as line 2.  Which of the following organisms could be represented by line 1 on this diagram?

A) Clostridium perfringens
B) Enterotoxigenic Escherichia coli
C) Shigella flexneri
D) Vibrio cholerae
E) Vibrio parahaemolyticus

Correct Answer:

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