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USMLE · Question #163

Which of the following is not a gram-negative bug?

The correct answer is A. Clostridium perfringens. See the full explanation below for the reasoning.

Question

Which of the following is not a gram-negative bug?

Options

  • AClostridium perfringens
  • BVibrio cholerae
  • CEscherichia coli
  • DBordetella pertussis

How the community answered

(27 responses)
  • A
    78% (21)
  • B
    4% (1)
  • C
    11% (3)
  • D
    7% (2)

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