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Live vaccines before biologic therapy — RACP Adult Medicine MCQ

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HardEthics and public healthLive vaccines before biologic therapyRACP Adult Medicine

A 33-year-old woman with Crohn disease is due to start infliximab. She has no history of varicella infection and serology shows she is non-immune. She is not pregnant and has no current immunosuppression. What is the most appropriate management?

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Correct answer: BGive varicella vaccination before biologic therapy and delay immunosuppression for the recommended interval

Live vaccines should be given before significant immunosuppression when indicated, with an appropriate interval before biologic therapy. Giving live varicella vaccine after infliximab begins is unsafe. Adults can receive varicella vaccine if eligible and not immunosuppressed; antibiotics do not provide immunity.

Reference: Australian Immunisation Handbook; AMH