Professor Marsh has a broad research interest in child health in the tropics, with a particular focus in the immune epidemiology of malaria. From 1989 to 2014 he directed the KEMRI Wellcome Programme in Kenya. His research focuses on three main areas:
- Identifying the protective immune response to malaria
- Regulation of immune responses
- Determinants of virulence
Professor Marsh has a particular interest is in the development of science in Africa. He is currently seconded for 50% of his time as senior adviser to the African Academy of Sciences. He is also chair of the WHO Malaria policy advisory committee (MPAC) and a member of many global health advisory groups.
- Malaria vaccines
- Tropical medicine
- Child health in Africa
Professor Marsh has extensive media experience with both print and broadcast media.