Professor John Turnidge is an Emeritus Senior Staff Specialist, Microbiology and Infectious Diseases, for SA Pathology based at the Women's and Children's Hospital in Adelaide. He is an Infectious Disease Physician and Microbiologist who has had a long career in Adelaide and Melbourne working with antibiotic resistance and appropriate antibiotic use. He is a voting member of the Antimicrobial Susceptibility Testing subcommittee of the Clinical and Laboratory Standards Institute (USA), until recently was the Chair of the Australian Group on Antimicrobial Resistance, co-founded the Australian Society for Antimicrobials and is a Past President of the Australian Society for Microbiology. Professor Turnidge also chaired JETACAR (the Joint Expert Technical Advisory Committee on Antimicrobial Resistance) and for a time the Expert Advisory Group on Antimicrobial Resistance of the National Health and Medical Research Council (NHMRC).