Dr Hertzog is a sociologist with expertise in the use of big data and advanced geospatial and statistical methods for public health applications. He is a Senior Research Fellow at the Centre for Data Linkage at the Curtin School of Population Health and has extensive experience with large-scale quantitative research projects in sub-Saharan Africa, Brazil and Australia. He has contributed to multilateral organisations and governments by identifying and implementing data-driven, durable solutions grounded in evidence-based approaches.