Eduard Grebe is a Staff Scientist in the Epidemiology Core group at Vitalant Research Institute, San Francisco, CA, and a Research Associate at the DST-NRF Centre of Excellence in Epidemiological Modelling and Analysis (SACEMA), Stellenbosch University, South Africa. He works primarily on HIV incidence surveillance and was the principal analyst for the CEPHIA collaboration, an international consortium established to independently evaluate biomarkers of ‘recent’ HIV infection used in cross-sectional incidence estimation. He serves on the World Health Organisation Working Group on HIV Incidence Measurement and Data Use, is the maintainer of the open source inctools R package (which implements methods for incidence estimation and for characterizing recent infection tests) and works on several projects related to blood product safety. He obtained his PhD in Economics from the University of Cape Town in 2012 for work on public health policy in Sub-Saharan Africa.