VACCIN AGAINST GROUP A BETA HEMOLYTIC STREPTOCOCCUS AND RESPECTIVE PROCESS FOR OBTAINING THEREOF, which predicts the production of recombinant protein cloned from the gene emm5, which contains a sequence of oligonucleotides corresponding to 52 and/or 87 amino acid residues capable of protection, isolated after the sequential molecular identification of the epitopes from the M protein carboxy-terminal region, differing in 01 amino acid residue, identified by antibodies and T lymphocytes of health human beings and of patients carriers of rheumatic fever, capable of generating a protective response by antibodies depending on the T lymphocytes; prevention of the development of the autoimmune disease by the selected epitope was evaluated in vitro with T lymphocytes from the cardiac tissue of patients with lesions arising out of rheumatic fever.