He has undertaken research on the epidemiology and prevention of blood borne viruses and sexually transmitted infections and the health and wellbeing of affected populations for over 20 years. His research focuses is on generating evidence for effective public health policy and practice.

He has strong interests in developing novel and innovative approaches to epidemiological research to inform clinical and public health policy and practice He has led the development and maintenance of innovative sentinel surveillance systems for HIV and other sexually transmitted infections and blood borne viruses in developed and low and middle income countries.