Vaccine for protection against
The present invention pertains to a vaccine comprising an IgM protease antigen of Streptococcus suis , for use in a method for protecting pigs against an infection with Streptococcus suis of serotype 2 and against an infection with Streptococcus suis of serotype 9.
1. A method for protecting a piglet against a pathogenic infection with Streptococcus suis of serotype 2 and Streptococcus suis of serotype 9 comprising administering a vaccine comprising an IgM protease antigen of Streptococcus suis of serotype 2 to the piglet; wherein the administering of the vaccine to the piglet is performed when the piglet is at an age of at most 28 days, wherein the vaccine is administered only once to the piglet.
2. The method of claim 1 , wherein the administering of the vaccine to the piglet is performed before the piglet is at an age at which the piglet is weaned.
3. The method of claim 1 , wherein the piglet has maternally derived anti- Streptococcus suis of serotype 2 antibodies.
4. The method of claim 1 , wherein the method of administering of the vaccine to the piglet is for conferring protection against mortality associated with a pathogenic infection with Streptococcus suis of serotype 2 and serotype 9.
5. The method of claim 1 , wherein the method of administering of the vaccine to the piglet is for conferring protection against clinical signs associated with a pathogenic infection with Streptococcus suis of serotype 2 and serotype 9.