In this video Valerie Mizrahi introduces her work and discusses her most exciting current projects.

Valerie Mizrahi, Director of the Institute of Infectious Disease and Molecular Medicine and professor at the University of Cape Town, has been at the forefront of developing new responses to HIV and TB for over 15 years. She has made a career working across both diseases and her research efforts have led to pivotal TB drug discoveries, but there is still a long way to go. She spoke to A C Grayling about her passion for medical research and her determination to bring lifesaving innovations to low-income countries.

Exchanges at the Frontier with Valerie Mizrahi was recorded at Wellcome Collection on 20 October 2011 and was first broadcast on the World Service on 10 December 2011.