The present disclosure relates to immunogenic compositions comprising a severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) antigen, and a toll-like receptor 9 (TLR9) agonist, such as an oligonucleotide comprising an unmethylated cytidine-phospho-guanosine (CpG) motif. The immunogenic compositions are suitable for stimulating an immune response against a SARS-CoV-2 in an individual in need thereof.

The present invention relates to an immunogenic composition against severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2), especially to an immunogenic composition having a recombinant SARS-CoV-2 S protein and adjuvant.

The present invention relates to an immunogenic composition against severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2), especially to an immunogenic composition having a recombinant SARS-CoV-2 S protein and adjuvant.

Engineered bacteriophages comprising polynucleotides encoding heterologous proteins under the control of repressible promoters are provided. Also disclosed are processes for producing the engineered bacteriophages, pharmaceutical compositions comprising the engineered bacteriophages and therapeutic and preventive methods using the engineered bacteriophages.

A non-infections bacteriophage T4 nanoparticle vaccine composition includes a bacteriophage capsid and at least one antigen displayed on the surface of the capsid or packaged in its interior. The vaccine is administered intranasally and is free of an adjuvant. The antigen is selected from respiratory viruses including coronavirus and influenza.