Following a previous meeting in 2018, Kat Rock met with Bill Gates (albeit virtually) again in August to present her research group’s modelling results on African sleeping sickness. Kat heads the HAT MEPP group, funded by the Bill & Melinda Gates Foundation, which uses data-driven insights to support local decision making and planning in an effort to eliminate sleeping sickness in a number of countries in Africa. The HAT MEPP group consists of modellers and health economists from both the University of Warwick and the Swiss Tropical and Public Health Institute.