Prof. dr. John W. A. Rossen has a 30-year history in Molecular Virology and Microbiology and published more than 200 peer-reviewed articles (H-index 43). He obtained a Bachelor of Science in Mathematics & Physics (1989, Faculty of Mathematics and Science, Utrecht University) and a Master of Science in Biology (1991, Faculty of Biology, Utrecht University). In 1996, he obtained a PhD in (Molecular) Virology and Cell Biology at the Faculty of Veterinary Medicine, Utrecht University. His PhD research focused on “Coronavirus – Host Interactions.” Since 2004, next to his (fundamental) research, he is actively involved in Molecular Diagnostics and Prevention of Infectious Diseases. As a Professor for Personalized Microbiology, he successfully implemented the use of Next-Generation Sequencing for routine Clinical Microbiology and Infection Prevention. Nowadays, he and his research group focus on applying metagenomics and metatranscriptomics into Clinical Microbiology and Public Health. He is the immediate past president of the ESCMID Study Group for Genomic and Molecular Diagnostics (ESGMD). From the year 2020, he joined IDbyDNA to further power science and medicine to improve health by decoding the unknown, including setting the standard for identifying and understanding microorganisms and their role in human disease. Within his new role, he focuses on Product Strategy (Europe) and Research & Development and Product Development (Global). From March 2020, he is affiliated as an Adjunct Professor at the Department of Pathology of the University of Utah School of Medicine.