Mathijs Theelen

Mathijs is a Specialist in Equine Internal Medicine (Dipl.ECEIM) working at Utrecht University Equine Hospital. He is currently team leader of the division of equine internal medicine. In his clinical work he focusses mainly on gastroenterology, hepatology and neonatology. He is coordinator of the Neonatal Intensive Care Unit for foals. After his graduation from Utrecht University in 2008, Mathijs started working as a researcher at the University of California in Davis, USA. After that he worked in a large equine referral hospital (Lingehoeve Diergeneeskunde) in the Netherlands before returning to Utrecht University to start his residency in equine internal medicine. He passed his board exams in 2014. In 2022 Mathijs defended his PhD thesis entitled ‘Fighting antimicrobial resistance in foal sepsis: does the gut conspire against us?’. His PhD was a collaboration between the Department of Clinical Sciences and the Department of Biomolecular Health Sciences at the Faculty of Veterinary Medicine at Utrecht University and focused on antimicrobial resistance and the role of the microbiome as a potential reservoir of antimicrobial resistance genes (resistome). Mathijs is actively involved in many research projects and has (co-)authored several scientific publications on topics related to equine neonatology, (molecular) microbiology, gastroenterology and hepatology.