Abstract: Compositions comprising influenza virosomes comprising reconstituted envelopes of one or more influenza strains are used in vaccine formulations, including intranasal or inhalation formulations, to induce an immune response against one or more influenza strains. The virosomes of the composition are derived entirely from influenza viral particles and comprise the influenza antigen haemagglutinin. No lipid from an external source is added to the virosomes. In addition, no separate adjuvant or immune stimulator is added to the composition.

Abstract: A viral vaccine, specifically an influenza vaccine, comprises a combination of a component (a1) represented by a detoxified or non-toxic mutant of subunit A of an AB type exotoxin, and a component (a2) represented by at least one substance selected from the group consisting of metal salts and mineral salts, in association with a viral immunogen.

Abstract: The present invention provides a composition of influenza virosomes comprising reconstituted envelopes of said virus, wherein the viral envelopes are entirely derived from influenza viral particles, wherein no lipid is added from an external source to the reconstituted virosomes, wherein the virosomes comprise the influenza antigens haemagglutinin and/or neuraminidase or derivatives thereof, wherein no separate adjuvant and/or immune stimulator is added to the composition, and wherein the composition is for intranasal or inhalational administration, which composition is characterized in that a single intranasal or inhalational administration to a human being is sufficient for the induction of a systemic immune response and/or a local immune response and/or a cytotoxic lymphocytes response against said influenza antigens, which systemic response is in accordance with the CHMP criteria for influenza vaccine, and wherein the dose of haemagglutinin per viral strain per intranasal or inhalational administration is