Abstract: The present invention is in the fields of medicine, public health, immunology, molecular biology and virology. The invention provides compositions, vaccine compositions and pharmaceutical compositions for the treatment, amelioration and/or prevention of influenza. The compositions, vaccine compositions and pharmaceutical compositions of the invention comprise a virus-like particle of an RNA bacteriophage and at least one antigen, wherein said at least one antigen is an ectodomain of an influenza virus hemagglutinin protein or a fragment of said ectodomain of an influenza virus hemagglutinin protein. When administered to an animal, preferably to a human, said compositions, vaccine compositions and pharmaceutical compositions efficiently induce immune responses, in particular antibody responses, wherein typically and preferably said antibody responses are directed against influenza virus. Thus, the invention further provides methods of treating, ameliorating and/or preventing influenza virus infection.

Abstract: The present invention is in the fields of medicine, public health, immunology, molecular biology and virology. The invention provides composition comprising a virus-like particle (VLP) linked to at least one antigen of the invention, wherein said antigen of the invention is CCR5 of the invention, gastrin of the invention, CXCR4 of the invention, CETP of the invention or C5a of the invention. The invention also provides a process for producing the composition. The compositions of this invention are useful in the production of vaccines, in particular, for the treatment of diseases in which the antigen of the invention mediates, or contributes to the condition, particularly for the treatment of AIDS, gastrointestinal cancers, coronary heart diseases or inflammatory diseases. Moreover, the compositions of the invention induce efficient immune responses, in particular antibody responses.