Institute of Medical Microbiology, Faculty of Medicine, Justus-Liebig University, Frankfurter Strasse 107, 35392 - Giessen, Germany. Rohit.Ghai@mikrobio.med.uni-giessen.de|Institute of Medical Microbiology, Faculty of Medicine, Justus-Liebig University, Frankfurter Strasse 107, 35392 - Giessen, Germany. Rohit.Ghai@mikrobio.med.uni-giessen.de|Institute of Medical Microbiology, Faculty of Medicine, Justus-Liebig University, Frankfurter Strasse 107, 35392 - Giessen, Germany. Rohit.Ghai@mikrobio.med.uni-giessen.de