The present invention pertains to the use of Streptococcus suis antigens corresponding to Streptococcus suis bacteria of a predetermined serotype in the manufacture of a vaccine for administration to a sow or gilt, to protect a piglet through the intake of colostrum of the said sow or gilt, against a disorder arising from Streptococcus suis bacteria of a serotype other than the predetermined one. The invention also pertains to Streptococcus suis antigens for use in the manufacture of such a vaccine.