Biography
Tom Fletcher is a Professor of Emerging and High Consequence Infectious Diseases, and Director of the Global Health Trials Unit at Liverpool School of Tropical Medicine (LSTM). He is also an honorary Consultant in Infectious Diseases and General Internal Medicine at the Royal Liverpool University Hospital and UK Health Security Agency. After completing undergraduate training at University of Leeds, Tom undertook his general duties in the Defence Medicine Services and then higher specialist training in Liverpool, before retiring from the military in 2024. He was seconded to the department of Pandemic and Epidemic Diseases at HQ World Health Organisation for a year before the 2013-15 Ebola Virus Disease outbreak in West Africa, during which he and colleagues from the World Health Organisation clinical team led a step change in Ebola case management. For his PhD Tom undertook a Wellcome Trust fellowship investigating Crimean-Congo Hemorrhagic Fever in Turkiye. During the COVID-19 pandemic, he returned to HQ World Health Organisation clinical team and was deployed to South Korea before returning to support the UK NHS response. He continues to deploy to filovirus disease outbreaks for the World Health Organisation, most recently in Uganda in 2022 and Rwanda in 2024.
Research interests
Tom’s research at LSTM is mainly focussed on high-consequence infectious diseases, where he is the Co-Director of the ACTIVE platform – ACcelerating Therapeutics and dIagnostics in Viral HaEmorrhagic fever. He has active research programmes in Turkiye and West Africa. Tom is a senior investigator within the AGILE trial platform, leading AGILE International and the laboratory pillar. He was a candidate chief investigator on 2 early phase trials of novel therapeutics in COVID-19 in the UK and South Africa. In Crimean-Congo Hemorrhagic Fever he is the Chief Investigator in the UMIT-1 and UMIT-2 therapeutic trials and through his network has developed and evaluated near patient diagnostic platforms. His other research focusses on emerging infections, including in pathogenesis the loss of haemostasis in viral haemorrhagic fevers. He is the chief investigator of the SAND program, a one health grant with the Kingdom of Saudi Arabia developing diagnostic tests for zoonotic infections. He is currently the Chair the World Health Organisation mpox guideline development group.
Teaching
Tom has a large research group in LSTM and supervises 10 PhD students currently. He teaches on the Diploma in Tropical Medicine & Hygiene, the Diploma in Tropical Nursing Masters in Tropical and Infectious Diseases and externally the Military Tropical Medicine and Infectious Diseases.
Selected research publications
Safe delivery of intensive care for Marburg virus disease in Rwanda – Journal: The Lancet Infectious Diseases – Published: 20th November 2025
Routes of transmission of mpox by virus clade and geographic distribution: A systematic review – Journal: Journal of Infection and Public Health – Published: 14th October 2025
Persistence of SARS-CoV-2 Antibody Response across Diverse Clinical Settings in Oman: Insights from a Prospective ELISA-based Study – Journal: IJID Regions – Published: 24th September 2025
Marburg Virus Disease in Rwanda, 2024 — Public Health and Clinical Responses – Journal: New England Journal of Medicine – Published: 11th September 2025
Illustrative case series of eosinophilia in UK Armed Forces personnel and recommended management for non-specialists – Journal: BMJ Military Health – Published: 11th June 2025
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