An antigenic composition comprising a plurality of antigenic components derived from Streptococcus equi subsp antigens. equi, wherein the antigenic composition is selected from: (A) a composition comprising (i) a fusion polypeptide consisting of the amino acid sequence as shown in SEQ ID NO: 22 starting from the amino acid 12, (ii) a fusion polypeptide consisting of the amino acid sequence as shown in SEQ ID NO: 24, beginning from the amino acid 12, and (iii) a polypeptide consisting of the amino acid sequence as shown in SEQ ID NO: 26, beginning from the amino acid 12 (B) a composition comprising (i) a fusion polypeptide consisting of the amino acid sequence as shown in SEQ ID NO: 28, beginning from the amino acid 12, (ii) a fusion polypeptide consisting of the amino acid sequence as shown in SEQ ID NO: 30, beginning from the amino acid 12, and (iii) a polypeptide consisting of the amino acid sequence as shown in SEQ ID NO: 32, starting at from amino acid 12 (C) a composition comprising (i) a fusion polypeptide consisting of the amino acid sequence as shown in SEQ ID NO: 34, beginning from the amino acid 12, (ii) a fusion polypeptide consisting of the amino acid sequence as shown in SEQ ID NO: 30, beginning from the amino acid 12, and (iii) a polypeptide consisting of the amino acid sequence as shown in SEQ ID NO: 32, starting at from amino acid 12 and (D) (i) a composition comprising a fusion polypeptide consisting of the amino acid sequence as shown in SEQ ID NO: 34, beginning from the amino acid 12 and (ii) a fusion polypeptide It consists of the amino acid sequence as shown in SEQ ID NO: 30, beginning from the amino acid 12.Una composición antigénica que comprende una pluralidad de componentes antigénicos derivados de antígenos de Streptococcus equi subsp. equi, en la que la composición antigénica se selecciona entre: (A) una composición que comprende (i) un polipéptido de fusión que consiste en la secuencia de aminoácidos tal como se muestra en la SEQ ID NO: 2