He's a professor for a program that ranks 6th in the world for its field behind University of London, University of California (Davis), Utrecht University, The University of Edinburgh, and Cornell University. This is two ranks ahead of the Veterinary school at the University of Cambridge.

One arm of his research program is dedicated to designing and optimizing novel biotherapies for the treatment of cancers

The second arm of his research program focuses on studying host responses to viruses and other inflammatory stimuli. This has implications for the treatment of infectious diseases and inflammation-mediated disorders.

Dr. Bridle received graduate training in immunology at the University of Guelph and then postdoctoral training as a viral immunologist at McMaster University.

Here are the 51 papers he has authored since 1999

This may come as a surprise to you, but humans and animals share physiology. You share about half of your DNA with a banana. He's a PhD in viral immunology, which is what he's talking about. The fact that he teaches and researches in this field at a university that specializes in agriculture is not surprising or discrediting.