1 Centre for Antibiotic Allergy and Research, Department of Infectious Diseases and Immunology, Austin Health, Heidelberg, Victoria, Australia; Department of Infectious Diseases, University of Melbourne at the Peter Doherty Institute for Infection and Immunity, Parkville, Victoria, Australia. Electronic address: sara.vogrin@austin.org.au.
2 Division of Rheumatology, Allergy, and Immunology, Department of Medicine, Massachusetts General Hospital, Boston, Mass; Harvard Medical School, Boston, Mass.
3 Centre for Antibiotic Allergy and Research, Department of Infectious Diseases and Immunology, Austin Health, Heidelberg, Victoria, Australia; Department of Infectious Diseases, University of Melbourne at the Peter Doherty Institute for Infection and Immunity, Parkville, Victoria, Australia.