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Review Question - QID 210411

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QID 210411 (Type "210411" in App Search)
A 4-year-old boy is brought to his pediatrician by his mother for a cough. His mother reports that he has had a loud cough and hoarse voice for the past 3 days. He also had a runny nose and mild fever last week. He was born with Tetralogy of Fallot and underwent surgery as an infant. He has been followed regularly by a pediatric cardiologist. There are no other sick contacts in the household. His temperature is 100.9°F (38.3°C), blood pressure is 105/65 mmHg, pulse is 110/min, and respirations are 24/min. An anteroposterior radiograph of the neck is shown in Figure A. A lung radiograph is normal. Which of the following pathogens is the most likely cause of this patient's condition?
  • A
  • A