Claas is a Junior Research Fellow at Wolfson College and a Research Associate at the University of Oxford’s Wellcome Unit for the History of Medicine.
Submitted in 2015, his prize-winning dissertation Pyrrhic Progress – Antibiotics in Western Food Production (1949-2015) (under contract with Rutgers University Press) addresses the history of agricultural antibiotic use in the US and UK. He is also a co-curator of the Museum of the History of Science’s special exhibition Penicillin – Back from the Dead (Nov 2016 to May 2017).
As part of the Oxford Martin Programme on Collective Responsibility for Infectious Disease, Claas’ current research focusses on the global history of antibiotic use, resistance, and regulation since the 1930s. He is particularly interested in why societies regulate similar risks differently and has published and given numerous talks on the past and current challenges of antibiotic regulation and resistance.