Dr Karabus is the Vice-Chairperson of the Allergy Society of South Africa and is a co-director of the Allergy Foundation of South Africa.

She maintains the position of consultant and senior lecturer In Allergology in the Department of Allergy and Asthma at Red Cross War Memorial Children’s Hospital and UCT. She is an associate at the Chest and Allergy Centre, Netcare Christiaan Barnard Hospital, a unique multi-disciplinary centre offering a combined allergy and pulmonology service.

Dr Karabus is a member of various organisations including the Allergy Society of South Africa, the American Academy of Allergy, Asthma and Immunology and the Canadian Society of Allergy and Clinical Immunology. She serves on the editorial board of the Current Allergy and Clinical Immunology journal as well as the European Medical Journal, Allergy and Immunology section.

Dr Karabus has published several articles in medical journals and is a co -author of the ALLSA Handbook of Allergy as well as the book, Allergy Sense for families: a practical guide.