A nurse in a pediatric clinic is performing a history and physical for a toddler who is scheduled to receive a measles, mumps, and rubella (MMR) immunization. Which of the following findings indicate that the immunization should be withheld?

A. Temperature of 37.9°C (100.2°F): A mild fever is not a contraindication to vaccination. B. Family history of sudden unexpected infant death (SUID): Family history of SUID is unrelated to MMR vaccination safety. C. Taking an antihistamine for seasonal allergies: Antihistamines and mild seasonal allergies are not reasons to delay vaccination. D. Receiving prednisone for nephrotic syndrome Prednisone is an immunosuppressant. Live vaccines like MMR should be postponed if the child is immunosuppressed.