Günter Weiss oversees the Department for Internal Medicine II at the University Clinic of Innsbruck and is a renowned expert in the fields of internal medicine, infection, and immunity. His outstanding expertise is mainly based on his research achievements on immunological mechanisms involved in the defence against infections and on iron metabolism–especially regarding genetic disorders of iron absorption (haemochromatosis), anaemia of chronic disease (ACD / Infectious and Tumor Anaemia) and the importance of iron for immune response and the course of an infection (host–pathogen interaction). Günter Weiss is spokesman for the Comprehensive Center for Infection, Immunity and Transplantation at the Medical University of Innsbruck. In February 2020, he was responsible for treating the first two Covid-19 patients in Austria. Since July 2022, Weiss has been a member of Academia Europaea.