Provided herein, in some embodiments, are vaccines (and vaccination methods) that include a ribonucleic acid (RNA) polynucleotide encoding a human metapneumovims (hMPV) F protein and a RNA polynucleotide encoding a human parainfluenza virus 3 (hPrV3) F protein.

The present invention is directed to novel nucleotide and amino acid sequences of Porcine Parainfluenza Virus Type 1 (PPIV-1), including novel genotypes thereof, all of which are useful in the preparation of immunogenic compositions and vaccines for treating and preventing disease in swine.

Embodiments of a recombinant human Parainfluenza Virus (hPIV) F ectodomain trimer stabilized in a prefusion conformation are provided. Also disclosed are nucleic acids encoding the hPIV F ectodomain trimer and methods of producing the hPIV F ectodomain trimer. Methods for inducing an immune response in a subject are also disclosed. In some embodiments, the method can be a method for treating or inhibiting a hPIV infection in a subject by administering a effective amount of the recombinant hPIV F ectodomain trimer to the subject.

The disclosure relates to Lassa virus, Nipah virus, and betacoronavirus ribonucleic acid 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.

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.

Embodiments of a recombinant human Parainfluenza Virus (hPIV) F ectodomain trimer stabilized in a prefusion conformation are provided. Also disclosed are nucleic acids encoding the hPIV F ectodomain trimer and methods of producing the hPIV F ectodomain trimer. Methods for inducing an immune response in a subject are also disclosed. In some embodiments, the method can be a method for treating or inhibiting a hPIV infection in a subject by administering a effective amount of the recombinant hPIV F ectodomain trimer to the subject.

The invention relates to an immunization regimen whereby an infant is protected against respiratory syncytial virus (RSV) through administration of a first anti-RSV immune response inducing composition to his or her mother during pregnancy, followed by administration of a second anti-RSV immune response inducing composition to the infant after birth.

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.