As a senior vice president at PSI, Des is responsible for malaria and child survival programs in 40 countries across Africa, Asia and Latin America.
Des was a lecturer in medical entomology at the London School of Hygiene and Tropical Medicine between 1991 and 1998. He has over 20 years experience in the control of vector borne diseases with a principal focus on malaria. His work has focused on scaling up access to insecticide treated nets and quality-assured treatment across the malaria endemic world. He has published numerous papers on entomology, malaria, and written or edited two books on vector control.
Des has a doctorate from the Liverpool School of Tropical Medicine. He is based in Nairobi, Kenya.