Professor Amanda Leach is an expert in middle ear infections and the prevention of hearing loss among Aboriginal children. Her research into the complexity of middle ear infections has shaped innovative trials to improve their prevention and treatment. She led the development of the 2020 national guidelines for Aboriginal and Torres Strait Islander children and the accompanying mobile app, OMapp. Endorsed by the Royal Australian College of General Practitioners, the guidelines support decisions about ear health care. Her work also addresses shortages in the remote primary health care workforce to improve services and reduce the disadvantage associated with preventable hearing loss.