Parvovirus Aplastic Crisis — RACP Adult Medicine MCQ

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ModerateHaematologyParvovirus Aplastic CrisisRACP Adult Medicine

A 45-year-old woman with HS develops aplastic crisis (reticulocyte count 0%). She has a viral illness. Causative organism?

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Correct answer: A — Parvovirus B19

Parvovirus B19 infects erythroid precursors causing transient aplastic crisis in chronic haemolytic disorders. Recovery spontaneous in 7–10 days.

Reference: eTG – 2025 – Haematology