Vaccine Based on Recombinant Fusion Protein Combining Hepatitis B Virus PreS with SARS-CoV-2 Wild-Type- and Omicron-Derived Receptor Binding Domain Strongly Induces Omicron-Neutralizing Antibodies in a Murine Model

Pia Gattinger, Bernhard Kratzer, Al Nasar Ahmed Sehgal, Anna Ohradanova-Repic, Laura Gebetsberger, Gabor Tajti, Margarete Focke-Tejkl, Mirjam Schaar, Verena Fuhrmann, Lukas Petrowitsch, Walter Keller, Sandra Högler, Hannes Stockinger, Winfried F Pickl, Rudolf Valenta^*