Dr. David Heymann is the Chairman of the Health Protection Agency. Previously, he was Assistant Director-General for Health Security and Environment at WHO. Dr Heymann worked for 13 years in sub-Saharan Africa for US Centers for Disease Control and Prevention. He is a recipient of the American Public Health Association Award for Excellence and was named to the United States Institute of Medicine. Currently he is also the Director of the Global Health Security Centre at Chatham House.