Multiple Choice
What is incorrect about pertussis?
A) A virulence factor of B.pertussis is toxins that destroy cilia cells is produced.
B) The source of infection is direct contact with inhaled droplets.
C) The paroxysmal stage is characterized by persistent coughing.
D) The number of cases is steadily decreasing since 1976.
E) It can cause severe, life-threatening complications in babies.
Correct Answer:
Verified
Correct Answer:
Verified
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