Judith Bouman has been a PhD student in Prof Roland Regoes’ group at ETH Zurich since March 2018. In this BRCCH consortium, she is working on developing and testing statistical methods for estimating the cumulative incidence of SARS-CoV-2 infection with serosurvey data. In particular, she exploits approaches that do not require a cut-off to classify serological samples into sero-positive or negative. Before starting her PhD, she obtained a bachelor’s in medical natural sciences and a master’s in mathematics from the Vrije Universiteit Amsterdam in the Netherlands. Besides working on SARS-CoV-2, she models within-host dynamics of HIV-1 and the spread of vaccine escape mutants in heterogeneous populations.