1. Department of Clinical Microbiology, Heilig-Hartziekenhuis Roeselare-Menen, 8800 Roeselare, Belgium
2. Department of Molecular Diagnostics, Heilig-Hartziekenhuis Roeselare-Menen, 8800 Roeselare, Belgium
3. Department of Cardiac Surgery, Heilig-Hartziekenhuis Roeselare-Menen, 8800 Roeselare, Belgium
4. National Reference Centre for Bordetella pertussis, Department of Microbiology and Infection Control, Universitair Ziekenhuis Brussel, Vrije Universiteit Brussel (VUB), Laarbeeklaan 101, 1090 Brussels, Belgium