طفلة عمرها ٦ سنوات بسرطان الدم في مرحلة العلاج، أخوها في المدرسة عنده جدري الماء. هي لم تأخذ اللقاح، ولامسته أمس. ما الإجراء؟

A 6-year-old girl on leukaemia treatment had contact yesterday with her brother, who has chickenpox; she is unvaccinated. What is done?

1. No action is needed
2. Wait for a rash then attend
3. Notify oncology for prophylaxis
4. Give the live varicella vaccine now

Answer: C) Notify oncology for prophylaxis. Varicella is very dangerous in immunosuppression; the team gives immunoglobulin or antiviral prophylaxis. Live vaccines are contraindicated during treatment.