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Pediatrics · Respiratory illness
Sample itemWhat is the usual cause of bronchiolitis in infants?
Original practice item, not a recalled exam question. Nothing here is recorded.
The answer and the reasoning
D. Respiratory syncytial virus
Respiratory syncytial virus is the commonest cause of bronchiolitis, producing small-airway inflammation, mucus, and wheeze in infants.
Option by option
A. Candida albicans
Candida is not the usual bronchiolitis cause.
B. Plasmodium falciparum
Plasmodium causes malaria.
C. Streptococcus pyogenes
Streptococcus pyogenes causes pharyngitis more commonly.
D. Respiratory syncytial virus (correct)
Correct: RSV is the major bronchiolitis pathogen.
Source note: Original NextPrep sample item — pending expert review. This item is original practice material awaiting independent expert review, so confirm important facts in a standard textbook.