Nevenfunctie van Arjen van de Giessen, hoofd van het Centrum Zoönosen en Omgevingsmicrobiologie.
Member of the ANSES French agency for Food, Environmental and Occupational Health Safety (French agency for Food, Environmental and Occupational Health Safety) Scientific Board (per 1 juni 2023)
President of the Med-Vet-Net Association (per 1 oktober 2018)