expression products of tumor suppressor genes for example the p53 and rb genes a protein capable of stimulating an immune or an antibody response and a protein capable of inhibiting a viral infection or its development for example the antigenic epitopes of the virus in question or altered variants of viral proteins capable of entering into competition with the native viral proteins the invention thus relates to the vectors characterized in that they comprise a nucleotide sequence of pwd circovirus according to the invention and in that they additionally comprise a gene of interest the present invention likewise relates to viral particles generated from said vector according to the invention it additionally relates to methods for the preparation of viral particles according to the invention characterized in that they employ a vector according to the invention including viral pseudoparticles vlp virus like particles the invention likewise relates to animal cells transfected by a vector according to the invention likewise comprised in the invention are animal cells especially mammalian infected by a viral particle according to the invention the present invention likewise relates to a vector a viral particle or a cell according to the invention for the treatment and or the prevention of a genetic disease or of an acquired disease such as cancer or an infectious disease the invention is likewise directed at a pharmaceutical composition comprising by way of therapeutic or prophylactic agent a vector or a cell according to the invention in combination with a vehicle acceptable from a pharmaceutical point of view other characteristics and advantages of the invention appear in the examples and the.