Which of the following statements is TRUE concerning diphtheria?
A) The pseudomembrane is easily removed by surgery.
B) The signs and symptoms of the disease are directly caused by a bacterial toxin.
C) A diffuse rash is the major sign of diphtheria.
D) A microscopic exam of bacterial samples is sufficient for conclusive diagnosis.
E) No effective vaccine is available to prevent infection.
Correct Answer:
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