4-year-old Boy in Pediatrics — 4yo Child | Pediatric Infectious | SMLE Q#11027
SMLE Question #11027
Pediatrics
Pediatric Infectious
Objective: OBJ-113
Last updated: February 2026
A 4-year-old boy who has not received routine childhood immunizations has 1 day of severe sore throat, dysphagia, drooling, noisy breathing, and refusal to lie flat. He sits leaning forward, appears anxious, and has muffled speech. Oropharyngeal examination is limited due to distress. Which vaccine, if given in infancy, would most likely have prevented this illness?
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