A 5-year-old child with acute lymphoblastic leukemia (ALL) in remission is due for MMR and varicella vaccines. What is the best approach?
A) Administer both vaccines immediately
B) Administer only the inactivated vaccines
C) Postpone MMR and varicella until 3 months after chemotherapy ends
D) Give varicella but delay MMR
✅ Correct Answer: C) Postpone MMR and varicella until 3 months after chemotherapy ends.
Explanation: Live vaccines (e.g., MMR and varicella) should not be administered during chemotherapy or within 3 months of completing immunosuppressive therapy due to the risk of uncontrolled viral replication. Inactivated vaccines can be given, but they may have reduced efficacy during immunosuppression.
📖 Source:
● American Academy of Pediatrics (AAP). "Immunization in Immunocompromised Children: Guidelines and Recommendations." AAP, 2023.
● Infectious Diseases Society of America (IDSA). "Vaccination of the Immunocompromised Host: Best Practices." IDSA, 2022