From 1977-1984 Studies of Medicine at Ludwig-Maximilians University, Munich, Germany; From 5/1986 to 6/1989: Postdoctoral Research Fellow with E. Wimmer at the Department of Microbiology of the State University of New York at Stony Brook, U.S.A. From 7/1989 to 6/1993: Staff scientist and group leader at the research program “Applied tumour virology“ of the German Cancer Research Center (DKFZ) in Heidelberg, Germany. From 7/1993 to 4/1995: Head of the department “Viral Immunosuppression” at the DKFZ. From 5/1995 to 12/1999: Full professor and head of the department “Cell Biology and Virology“ at the Heinrich-Pette-Institut für experimentelle Virologie und Immunologie at the Universität Hamburg, Germany. Since 01/2000 head of the virology division of the Department of Infectious Diseases of the Ruprecht-Karls-Universität Heidelberg. Since 2002: Chairman of the Department of Infectious Diseases of the Ruprecht-Karls-Universität Heidelberg.