A school nurse is informed that a student has recently been diagnosed with idiopathic thrombocytopenia purpura. The nurse should identify that which of the following scheduled vaccines should be withheld?

A. Polio: The inactivated polio vaccine does not contain live virus and does not increase bleeding risk in clients with thrombocytopenia. It is generally considered safe to administer and does not worsen platelet destruction. Routine immunization schedules can usually be continued with this vaccine. B. Measles, mumps, and rubella virus: The MMR vaccine is a live attenuated vaccine and is associated with the development or worsening of thrombocytopenia. In a client with idiopathic thrombocytopenic purpura, this vaccine should be withheld due to the risk of further platelet reduction and bleeding complications. Careful timing or deferral is recommended until platelet counts stabilize. C. Diphtheria and tetanus toxoids and pertussis: This vaccine is inactivated and does not pose a risk of viral replication or immune-mediated platelet destruction. While injection technique may need to be adjusted to reduce bleeding risk, the vaccine itself is not contraindicated. D. Hepatitis B: Hepatitis B vaccine is non-live and safe for clients with thrombocytopenia. Although intramuscular injections can increase the risk of localized bleeding, the vaccine itself does not exacerbate ITP. Applying firm pressure after injection helps minimize bruising or hematoma formation.