Provided is an isolated mammalian negative strand RNA virus, metapneumovirus (MPV), within the sub-family Pneumoviridae, of the family Paramyxoviridae. Also provided are isolated mammalian negative strand RNA viruses identifiable as phylogenetically corresponding or relating to the genus Metapneumovirus and components thereof. In particular, provided is a mammalian MPV, subgroups and variants thereof. Also provided are genomic nucleotide sequences of different isolates of mammalian MPV, in particular, human MPV. Disclosed is the use of the sequence information of different isolates of mammalian MPV for diagnostic and therapeutic methods. Provided are nucleotide sequences encoding the genome of an MPV or a portion thereof, including both mammalian and avian MPV. Further described are chimeric or recombinant viruses encoded by the nucleotide sequences and chimeric and recombinant mammalian MPV that comprise one or more non-native or heterologous sequences. Also provided are vaccine formulations comprising mammalian or avian MPV, including recombinant and chimeric forms thereof. The vaccine preparations encompass multivalent vaccines, including bivalent and trivalent vaccine preparations.

The present invention describes a liquid vaccine composition of a live enveloped virus and a pharmaceutically acceptable carrier, whereby the carrier is a natural deep-eutectic solvent (NADES), and the vaccine has a water activity of less than about 0.8. The NADES provides a stabilisation of the sensitive virus for prolonged time and at ambient temperature. In general, the liquid vaccine compositions according to the invention, in different compositions for the various enveloped viruses, show remarkable capabilities of stabilisation. This overcomes the need for lyophilisation, a great economic benefit. Also the liquid nature of the vaccines facilitates administration to human or animal targets.

Iscom particles can be used as an adjuvant for preparing of an antigenic composition which comprises live micro-organisms and/or killed micro-organisms and/or antigenic molecules. A composition may comprise at least one iscom particle and one or more live micro-organisms and/or killed micro-organisms and/or antigenic molecules. A kit can comprise at least one compartment containing at least one living organism and at least one compartment containing at least one iscom particle.

Iscom particles can be used as an adjuvant for preparing of an antigenic composition which comprises live micro-organisms and/or killed micro-organisms and/or antigenic molecules. A composition may comprise at least one iscom particle and one or more live micro-organisms and/or killed micro-organisms and/or antigenic molecules. A kit can comprise at least one compartment containing at least one living organism and at least one compartment containing at least one iscom particle.

The disclosure relates to respiratory virus ribonucleic acid (RNA) vaccines and combination vaccines, as well as methods of using the vaccines and compositions comprising the vaccines.

Recombinant paramyxoviruses including a viral genome encoding a heterologous gene are provided. In several embodiments, the recombinant paramyxovirus is a recombinant parainfluenza virus, such as a recombinant PIV3 including a viral genome encoding a heterologous respiratory syncytial virus F ectodomain linked to the transmembrane domain and the cytoplasmic tail of the F protein from the PIV3. Nucleic acid molecules including the genome of a recombinant paramyxoviruses are also provided. The recombinant viruses may advantageously be used in vaccine formulations, such as for vaccines against parainfluenza virus and respiratory syncytial virus.

The disclosure relates to respiratory virus ribonucleic acid (RNA) vaccines and combination vaccines, as well as methods of using the vaccines and compositions comprising the vaccines.

The disclosure relates to respiratory virus ribonucleic acid (RNA) vaccines and combination vaccines, as well as methods of using the vaccines and compositions comprising the vaccines.

The disclosure relates to respiratory virus ribonucleic acid (RNA) vaccines and combination vaccines, as well as methods of using the vaccines and compositions comprising the vaccines.

The disclosure relates to respiratory virus ribonucleic acid (RNA) vaccines and combination vaccines, as well as methods of using the vaccines and compositions comprising the vaccines.