Professor Andrew Steer is the President of the Lancefield Society. Prof Steer is a paediatric infectious diseases physician at the Royal Children’s Hospital Melbourne; Director of the Infection, Immunity and Global Health Theme at the Murdoch Children’s Research Institute, Melbourne; and Group Leader of the Tropical Diseases Research Group at the Murdoch Children’s Research Institute, Melbourne. Prof Steer is Co-Chair of the Strep A Vaccine Global Consortium (SAVAC) and Co-Director of the Australian Strep A Vaccine Initiative (ASAVI). Prof Steer is the originator of a controlled human infection model of S. pyogenes pharyngitis. Prof Steer’s research interests are epidemiology and control of neglected tropical diseases including scabies and lymphatic filariasis; S. pyogenes clinical, epidemiology and vaccine research; and rheumatic heart disease pathogenesis, epidemiology and control.