Gudrun Overesch got her DVM from the University of Veterinary Medicine Hanover, foundation, Germany. She received her PhD (Dr. med vet.) in 1997 working on molecular biology of the equine immunoglobulin system. Afterwards she worked as veterinarian in a private microbiological diagnostic laboratory. In that time, she learned many diagnostic methods in the fields of virology, parasitology and bacteriology. Gudrun Overesch gained extensive knowledge in the area of food safety and hygiene. This knowledge included surveillance and the execution of legal actions after the diagnosis of zoonotic pathogens during her long-lasting employments at German federal diagnostic laboratories from 2000 to 2007. In 2008 she went back to university and took over the leadership of the Swiss national reference laboratory for zoonotic & epizootic bacterial pathogens and antimicrobial resistance (ZOBA) at the Institute of Veterinary Bacteriology of the University of Bern in Switzerland. This is an accredited unit harboring several Swiss National Reference Laboratories. Moreover, a diagnostic unit provides routine and special diagnostic services to the public (veterinarians and private hospitals), to the veterinary faculty in Bern, and offers diagnostic backstopping for Swiss cantonal laboratories, which includes the full spectrum of veterinary bacteriology. In 2018, the ZOBA was restructured and as head of the subdivision reference function and antimicrobial resistance monitoring she concentrates on international tasks of the Swiss Reference Laboratories on the European level. The ZOBA is the National Reference Laboratory for most of the bacterial zoonoses (e.g. brucellosis, salmonellosis, campylobacteriosis, listeriosis, yersiniosis, tularaemia). This reference function includes mainly providing expertise to Swiss laboratories and responsible authorities, performance of confirmatory testing of suspicious cases and organization of proficiency testings. Moreover, she is responsible for the national antimicrobial resistance monitoring in livestock reported to EFSA in accordance with European directive 2003/99/EC (European Commission, 2003). This international engagement on zoonoses and monitoring affaires within the network of European reference laboratories is completed by her activities in relevant European organizations focused more on clinical veterinary microbiology and diagnostics. Gudrun is board member of the European Association of Veterinarian Diagnosticians (EAVLD), committee member of the VetCAST (Veterinary committee for susceptibility testing) subcommittee by EUCAST and active member of the European study Group on Veterinary Microbiology (ESGVM). The professional profile is completed by her applied research. She publish internationally and national with focus on zoonoses and antimicrobial resistance.