Broad-spectrum antibiotics are widely used in patients on intensive care units (ICU), many of which develop hospital-acquired infections with Pseudomonas aeruginosa. Although preceding antimicrobial therapy is known as a major risk factor for P. aeruginosa-induced pneumonia, the underlying mechanisms[for full text, please go to the a.m. URL] Infektiologie Update 2018; 26. Jahrestagung der Paul-Ehrlich-Gesellschaft für Chemotherapie (PEG)