John Gilleard

Professor, Department of Comparative Biology and Experimental Medicine

Faculty of Veterinary Medicine, University of Calgary

Executive Committee Member - Chair

Host-Parasite Interactions

Veterinary Graduate

University of Liverpool, 1986

PhD - Parasitology

University of Glasgow, 1992


Contact information


Unviersity of Calgary, Foothills Campus : HSC2559


Research areas

  • Drug resistance in parasites

Drug resistance in parasites

Dr. John Gilleard’s research interests are in the field of drug resistance and molecular diagnostics in parasites.  His research group integrates parasitology, genetics and genomics to investigate the molecular basis, emergence and spread of anthelmintic drug resistance and to improve diagnostics. Dr. Gilleard’s research program uses the small ruminant parasite Haemonchus contortus as a model and studies both livestock and human gastrointestinal nematode parasites in the field.


Dr Gilleard qualified as a veterinarian from the Faculty of Veterinary Medicine, University of Liverpool, UK. After three years in general veterinary practice, he undertook a PhD at the University of Glasgow and 5 years post-doctoral research at the Wellcome Centre for Molecular Parasitology, at the Department of Genetics, University of Glasgow. Dr. Gilleard was awarded a Wellcome Trust Travel Fellowship in 1998 to spend 2 years in the Faculty of Medicine, University of Calgary before returning to a faculty position at the Faculty of Veterinary Medicine, University of Glasgow, UK. In 2007, he was appointed full Professor of Veterinary and Molecular Parasitology at Glasgow before moving to the University of Calgary in 2008 as Professor (Parasitology). He has held positions of Associate Dean Research, in Faculty of Veterinary Medicine, University of Calgary (2012-2017 and 2019) and President of the American Association of Veterinary Parasitology (2018).