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Measles Public Health — RACP Paediatrics MCQ

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ModerateInfectious DiseaseMeasles Public HealthRACP Paediatrics

A 4-year-old child presents with high fever, maculopapular rash starting on the face then spreading downwards, cough, coryza, and conjunctivitis. Koplik spots are noted on the buccal mucosa. He is unvaccinated. What is the most important public health action?

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Correct answer: D — Notification and post-exposure prophylaxis (MMR vaccine within 72 hours) for susceptible contacts

Measles is notifiable. Susceptible contacts should receive MMR vaccine within 72 hours of exposure or immunoglobulin within 6 days. The infectious period is from 4 days before to 4 days after rash onset. Immunocompromised and pregnant contacts should receive immunoglobulin.

Reference: Australian Immunisation Handbook – 2025 – Measles