Methods for the treatment of a bacterial infection such as a urinary tract infection are described. In particular, methods for treatment of a bacterial infection, such as a urinary tract infection comprising administration of LYS228 are disclosed.L'invention concerne des méthodes de traitement d'une infection bactérienne telle qu'une infection urinaire. En particulier, les méthodes de traitement d'une infection bactérienne, telle qu'une infection urinaire, selon l'invention comprend l'administration de LYS228.