I am a UK-trained general practitioner and clinical academic in a joint position between the London School of Hygiene & Tropical Medicine (LSHTM) and Nagasaki University, Japan. My research focuses on infectious and tropical diseases, particularly in Southeast Asia, using clinical epidemiological approaches including randomised controlled trials, observational studies and evidence synthesis.

I have worked in the NHS and in Cambodia, Laos, the Philippines, Vietnam and Malaysia, as well as with Médecins Sans Frontières in Uganda and as an expedition doctor in Belize. Since starting my joint LSHTM-Nagasaki University position in 2017, much of my work has focused on developing long-term research and educational collaborations between the two institutions and clinical and academic partners across Southeast Asia. One of the most rewarding aspects of this work has been the opportunity to work with excellent colleagues in Japan, the Philippines, Malaysia and elsewhere in Southeast Asia, and to develop partnerships that have grown over many years.

A major current research focus is leptospirosis. Working with colleagues and postgraduate researchers at Nagasaki University, LSHTM and partner institutions, we have developed a programme spanning epidemiology, diagnosis, evidence synthesis and treatment. This has included Cochrane reviews of antibiotics, antibiotic prophylaxis and corticosteroids, and the development of a Core Outcome Set for leptospirosis trials led by PhD student Nathaniel Lee. We are now moving towards interventional research and multicentre clinical trials in the Philippines.

Two recently awarded grants support the next stage of this programme. Funding from the Japan Society for the Promotion of Science (JSPS; KAKENHI) supports the run-in phase of a randomised controlled trial of adjunctive corticosteroids for moderate-to-severe leptospirosis in the Philippines, alongside development of clinical trial capacity. A Wellcome Trust trial development award supports further development towards a definitive multicentre trial. This work involves collaboration with clinical and academic partners in the Philippines, Japan and the UK, as well as wider Japanese research initiatives including AMED-supported ARISE and SCARDA programmes.

My wider infectious disease research includes rabies, diphtheria, measles, typhoid fever, dengue, COVID-19 and undifferentiated febrile illness. I also contribute to a SATREPS programme funded by AMED and JICA investigating zoonotic Plasmodium knowlesi malaria in Sabah, Malaysia, including evaluation of a community risk-education intervention. Earlier research included digital health and reproductive health, including randomised controlled trials of mobile phone-based interventions for contraception.

Since starting my joint LSHTM–Nagasaki University position in 2017, I have contributed to a substantial programme of collaborative research, postgraduate education and research capacity development. I have supervised or co-supervised five students through the Nagasaki University–LSHTM Joint PhD programme, three of whom have completed their PhDs, alongside PhD and Master's students working across a broad range of infectious disease and global health topics. These collaborations have generated a substantial body of peer-reviewed publications and have increasingly developed from individual research projects into larger collaborative programmes, clinical trials and research networks.

Alongside my research, I have played a major role in developing postgraduate tropical medicine education at Nagasaki University. I established the Diploma of Tropical Medicine & Hygiene (DTM&H), Philippines Tropical Medicine Course (PTMC) and Certificate of Tropical Medicine (CTM), and continue to direct these programmes. I am also Course Director of the Nagasaki University Master of Tropical Medicine. I teach and supervise Master's and doctoral students across a range of clinical and infectious disease topics and contribute to the wider academic partnership between Nagasaki University and LSHTM.