1 Day Of High in Pediatrics — 4yo Child | Pediatric Infectious | SMLE Q#11339
SMLE Question #11339
Pediatrics
Pediatric Infectious
Objective: OBJ-113
Last updated: February 2026
A 4-year-old boy is brought to the emergency department with 1 day of high fever, sore throat, and progressively painful swallowing. His parents report noisy breathing, drooling, and refusal to lie flat. He has not received routine childhood immunizations. He appears toxic and anxious, leaning forward, with inspiratory stridor and a muffled voice. Tender anterior cervical lymph nodes are palpable. Which of the following vaccines could have prevented this condition?
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