Streptococcus uberis extract as an immunogenic agent

摘要

The present invention relates to an extract of Streptococcus uberis as an immunogenic agent. It also relates to a process for obtaining said agent which comprises incubating a biofilm-producing S. uberis strain to obtain a biofilm and thermally treating the biofilm obtained. It relates also to a pharmaceutical composition comprising teichoic acids, preferably lipoteichoic acids, for use in the prevention and/or treatment of mastitis and/or infections caused by Streptococcus sp. or by biofilm-producing bacteria. The present invention also relates to a vaccine which comprises said immunogenic agent and to said vaccine and immunogenic agent for use in the prevention and/or treatment of infections caused by Streptococcus sp., especially in the prevention and/or treatment of mastitis caused by S. uberis. It also relates to a vaccination kit which comprises said agent or vaccine.