Patent ID: 7863013

Claim:
A method for the production of a Staphylococcus aureus serotype T5 or T8 capsular polysaccharide, the method comprising: (a) culturing a Staphylococcus aureus strain that produces a serotype T5 or T8 capsular polysaccharide on a culture medium M1 comprising, per liter of culture medium, 5 to 100 g of plant peptone, 0.5 to 20 g of yeast extract, 1 to 30 g of sugar, 1 to 200 mg of an iron salt selected from the group consisting of FeCl 3 and FeSO 4 , 1 to 700 mg of a magnesium salt selected from the group consisting of MgCl 2 and MgSO 4 , 0.1 to 500 mg of CaCl 2 , 0 to 50 mg of ZnCl 2 , 10 to 250 g of NaCl, and the pH of which is within a range of values of from 6.2 to 7.5, (b) inactivating the culture thus produced, and (c) recovering the Staphylococcus aureus serotype T5 or T8 capsular polysaccharide.