Abstract: The present invention relates to a protein subunit vaccine comprising at least one antigen characterized in that it comprises at least one monomer from at least one variant of severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2), wherein the at least one monomer is selected from the group consisting of the S1 subunit of the Spike protein or the receptor-binding domain (RBD) of the Spike protein. In an aspect of the present invention, the protein subunit vaccine comprises at least one antigen characterized in that it comprises two monomers from at least one variant of SARS-CoV-2, wherein each of the monomers are selected from the group consisting of the S1 subunit or RBD protein, and wherein the monomers are chemically bound to each other, optionally through a linker, forming fusion dimers or non-fusion dimers. The protein subunit vaccine may further comprise at least an adjuvant and at least an immunostimulant.

Abstract: The present invention provides a combination vaccine comprising one or more antigens of Mycoplasmahyopneumoniae, one or more antigens of Porcine circovirus, and pharmaceutically acceptable excipients and/or carriers, for use in the prevention and/or treatment of porcine enzootic pneumonia and/or Porcine Circovirus-Associated Diseases (PCVAD) by administration of the vaccine into the dermis of livestock, wherein the one or more antigens of porcine circovirus comprises the PCV2 ORF2 protein in an amount from 0.1 ?g/dose to 10 ?g/dose.

Abstract: The present invention provides a combination vaccine comprising one or more antigens of Mycoplasmahyopneumoniae, one or more antigens of Porcine circovirus, and pharmaceutically acceptable excipients and/or carriers, for use in the prevention and/or treatment of porcine enzootic pneumonia and/or Porcine Circovirus-Associated Diseases (PCVAD) by administration of the vaccine into the dermis of livestock, wherein the one or more antigens of porcine circovirus comprises the PCV2 ORF2 protein in an amount from 0.1 ?g/dose to 10 ?g/dose.