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Maheshi Ramasamy

MA (Cantab), MBBChir (Cantab), MRCP (UK), DPhil (Oxon)


Professor of Infection & Vaccinology

  • Associate Director, Education & Communication | Oxford Vaccine Group
  • Florey Lecturer and Fellow | Magdalen College
  • Deputy Director of Graduate Entry Medicine | University of Oxford
  • Consultant Physician | Oxford University Hospitals NHS Foundation Trust

Maheshi received her undergraduate medical training at Christ’s College, Cambridge. She subsequently trained as a junior doctor in Infectious Diseases and General Internal Medicine in Oxford, London and Australia and obtained a DPhil from Wadham College, Oxford.  

As a Clinician Scientist at the Oxford Vaccine Group, Maheshi’s research focuses on developing novel vaccines for emerging pathogens including Lassa fever virus and invasive non-typhoidal Salmonella. She has a particular interest in controlled human infection models, both as a tool to understand the pathophysiology of disease and to inform vaccine design.

She leads the UK National Immunisation Schedule Evaluation Consortium and is a member of the Joint Committee on Vaccination and Immunisation (JCVI), advising the UK Department of Health and Social Care on immunisation policy. 

Maheshi is the Director of the European Society for Clinical Microbiology and Infectious Diseases (ESCMID) Vaccine Subcommittee. 

Recent publications

ChAdOx1 nCoV-19 coronavirus vaccine: Long-term safety and immunological responses

Journal article

Ebrahimi N. et al, (2026), Vaccine, 88

Securing the future of immunisation: ESCMID's vision

Journal article

Ramasamy MN. et al, (2026), Clinical Microbiology and Infection, 32, 516 - 518

Securing the future of immunisation: ESCMID’s vision

Journal article

Ramasamy MN. et al, (2026), Cmi Communications, 3

Enablers and barriers to participation in vaccine trials: a narrative synthesis

Journal article

Daniel N. et al, (2026), Vaccine, 73