Dr. David Kelton is a world-class dairy cattle epidemiologist, Dairy Farmers of Ontario Dairy Cattle Health Research Chair, and Director of the Dairy at Guelph Centre. His research focuses on maintaining a healthy and sustainable food supply using a One Health approach for the prevention of infectious diseases. A leader in national and international dairy cattle working groups, including chairing the International Dairy Federation Standing Committee on Animal Health and Welfare, he contributes to dairy cattle health, welfare and sustainability. His current work focuses on prudent antimicrobial use in animal agriculture, contributing to a safe and wholesome dairy supply and promoting public confidence.