Patent ID: 8663654

Claim:
A method for immunizing a non-rodent subject comprising: administering to a non-rodent subject an effective amount for inducing an immune response against a Staphylococcus selected from the group consisting of Staphylococcus aureus or a Staphylococcus epidermidis of an isolated and pure capsular polysaccharide/adhesin (PS/A) having a molecular weight of greater than 100,000 daltons, wherein the isolated and pure PS/A is greater than 92% free of contaminants and contains less than 10% galactose and is preparable according to a method comprising: preparing an impure native PS/A from a Staphylococcus aureus or Staphylococcus epidermidis bacterial culture, isolating a PS/A-enriched material from the native impure PS/A, incubating with a base or acid to produce a semi-pure PS/A preparation, neutralizing the preparation, and incubating the neutralized preparation with hydrofluoric acid and neutralizing with a base to produce the pure PS/A.