Concerns have previously existed about the potential for measles, mumps and rubella (MMR) vaccination to cause an adverse allergic reaction in children who have egg allergy. Concern about possible allergic reactions has led to many children with egg allergy being referred for vaccination in hospital. Common practice has thus been to administer the MMR vaccine to such patients in hospital settings. Aickin et al’s article in the BMJ suggested that measles immunisation was safe to give to children with egg allergy, but should be performed in a setting where any adverse reactions could be dealt with appropriately.1 The safety of MMR in children with …