Vaccination of allogeneic hematopoietic stem cell transplant recipients-what should be considered?

Hilgendorf I Klinik für Innere Medizin II, Abteilung für Hämatologie und Internistische Onkologie, Universitätsklinikum Jena, Am Klinikum 1, D- 07740, Jena, Germany. inken.hilgendorf@med.uni-jena.de.
Greinix H Division of Hematology, Medical University of Graz, Graz, Austria.
Halter J Internal Medicine, Department of Hematology, University Hospital of Basel, Basel, Switzerland.
Lawitschka A St. Anna Children's Hospital, Medical University Vienna, Vienna, Austria.
Wolff D Department of Internal Medicine III, Haematology and Oncology, University Medical Center of Regensburg, Regensburg, Germany.