We collaborated with the National Institute for Communicable Diseases (NICD) on a significant longitudinal household cohort study in South Africa. This work was central to strengthening the country's system for monitoring vaccine-preventable illnesses and informing national immunisation policy.

For too long, crucial decisions about early childhood development (ECD) in South Africa lacked authoritative data, limiting effective policy-making and strategic investment. The Thrive by Five (TB5) Index, launched in 2021, emerged to fill this critical gap. Now the largest nationally representative survey of preschool child development in South Africa, the Index has directly informed government strategies, including the National Planning Commission’s 2024 2024 ECD Advisory Document and the Department of Basic Education’s 2030 Strategy for ECD Programmes.