Patients receiving regular red blood cell transfusions to treat chronic medical conditions such as transfusion dependent thalassaemia, sickle cell disease, inherited chronic haemolytic anaemias, or inherited bone marrow failure syndromes are often left unprotected from vaccine preventable diseases due to not meeting the required intervals between red blood cell transfusions. Evidence in this space is limited, however specialist advice suggests that immunisation of this patient group with live-attenuated vaccines is safe and recommended. As such, MVEC has created a new reference page outlining the process of immunisation for these patients. Please refer to MVEC：接受定期红细胞输注的患者的减毒活疫苗 了解更多信息。