The present invention relates to biotechnology. The claimed agents can be used for the prevention of SARS-CoV-2. A pharmaceutical formulation is created which contains a component (1) comprising an agent in the genomic form of a recombinant human adenovirus serotype (26) in which an expression cassette selected from the group consisting of SEQ ID NO: 1, SEQ ID NO: 2, SEQ ID NO: 3 is placed, and which further contains a component (2) comprising an agent in the genomic form of a recombinant human adenovirus serotype (5) in which an expression cassette selected from the group consisting of SEQ ID NO: 1, SEQ ID NO: 2, SEQ ID NO: 3 is placed. Furthermore, a pharmaceutical formulation is created which contains a component 1 comprising an agent in the genomic form of a recombinant human adenovirus serotype (26) in which an expression cassette selected from the group consisting of SEQ ID NO: 1, SEQ ID NO: 2, SEQ ID NO: 3 is placed, and which further contains a component (2) comprising an agent in the genomic form of a recombinant simian adenovirus serotype (25) in which an expression cassette selected from the group consisting of SEQ ID NO: 1, SEQ ID NO: 2, SEQ ID NO: 3 is placed, wherein an expression cassette selected from SEQ ID NO: 4, SEQ ID NO: 2 and SEQ ID NO: 3 is placed. Furthermore, a pharmaceutical formulation is created which contains component 1 comprising an agent in the genomic form of a recombinant simian adenovirus serotype (25) in which an expression cassette selected from the group consisting of SEQ ID NO: 4, SEQ ID NO: 2, SEQ ID NO: 3 is placed, and which further contains component (2) comprising an agent in the genomic form of a recombinant human adenovirus serotype (5) in which an expression cassette selected from the group consisting of SEQ ID NO: 4, SEQ ID NO: 2, SEQ ID NO: 3 is placed, wherein an expression cassette selected from SEQ ID NO: 1, SEQ ID NO: 2 and SEQ ID NO: 3 is placed.