Catriona Waitt is a Professor of Clinical Pharmacology and Global Health at the University of Liverpool, UK, and is undertaking her Wellcome Clinical Research Career Development Fellow at the Infectious Diseases Institute, Makerere University College of Health Sciences, Kampala, Uganda. Her major interest is drug dosing and safety in populations who are complex and often neglected from clinical trials, particularly pregnant and breastfeeding mothers and their infants. Her fellowship “MILK: Maternal and Infant Lactation pharmacokinetics” explores the transfer of a range of anti-infective drugs from mother to breastfed infant, combining clinical studies and pharmacometric approaches. She is Chief Investigator on the EDCTP-funded VirTUAL consortium, which combines a dose-escalation clinical trial, an observational pharmacokinetic study and both PBPK and pop-PK modelling to understand the interactions between second-line ART and first-line TB treatment. Alongside her research, she is a faculty member for Pharmacometrics Africa and all her work has a strong capacity-building aspect.