Assistant Professor Xerxes Tesoro Seposo

Speciality / Research theme / Keywords
Environmental Epidemiology, Air Pollution Epidemiology, Climate Change, Health Economics
Masters Programme


  • Master of Environment and Natural Resource Management (MENRM)
  • Master of Public Health (MPH)
  • Doctor of Philosophy (PhD) in Human Care Science

Research gate or Linked-in account links

Researchgate: https://www.researchgate.net/profile/Xerxes_Seposo
LinkedIn: https://www.linkedin.com/in/xerxes-seposo-9333814b/


  • School of Tropical Medicine and Global Health
  •  United Nations Association for Development And Peace (UNADAP)


Worked before in the Department of Health in the Philippines in the field as a Public Health Manager (PHM). After my PHM stint, I worked as a Project Evaluation Officer as part of the monitoring and evaluation unit/team in the Philippine National AIDS Council Secretariat. After being involved in the field implementation/policy in the Philippines, I shifted towards a more academic field when I took my MPH (with specialization in Health Economics) and my eventual PhD (with specialization in Environmental Epidemiology. Worked as a Post-doctoral researcher in Kyoto University, carrying out research activities related to air pollution and climate change. Currently, I am an Assistant Professor in TMGH and an Honorary Advisor for Climate Action and Policy Making at UNADAP.


Biostatistics; Environmental Epidemiology


My current research field of interest includes the fields of environmental epidemiology and health economics/policy. In environmental epidemiology, I am doing research related to air pollution, temperature (climate change), climate-sensitive diseases (i.e. diarrhea, dengue) and their impact/association to health. I am also doing research in relation to the implications of air pollution/climate policies to environmental exposures and their subsequent impact on health. While for health economics, I do operational research (efficiency) and cost-effectiveness studies.

The country/countries where you work currently

  • Japan

Five MOST IMPORTANT/INTERESTING recent publications

  1. Seposo XT, Okubo I, Kondo M. Assessing frontline HIV service provider efficiency using data envelopment analysis: a case study of Philippine social hygiene clinics (SHCs). BMC Health Services Research. 2019;19(1):415.
  2. Hoshi SL, Seposo X, Shono A, Okubo I, Kondo M. Cost-effectiveness of Recombinant Zoster Vaccine (RZV) and Varicella Vaccine Live (VVL) against herpes zoster and post-herpetic neuralgia among adults aged 65 and over in Japan. Vaccine. 2019;37(27):3588-97.
  3. Seposo X, Kondo M, Ueda K, Honda Y, Michikawa T, Yamazaki S, Nitta H. Health impact assessment of PM2.5-related mitigation scenarios using local risk coefficient estimates in 9 Japanese cities. Environment international. 2018;120:525-34.
  4. Iguchi JA, Seposo XT, Honda Y. Meteorological factors affecting dengue incidence in Davao, Philippines. BMC public health. 2018;18(1):629.
  5. Gasparrini A, Guo Y, Sera F, Vicedo-Cabrera AM, Huber V, Tong S, de Sousa Zanotti Stagliorio Coelho M, Nascimento Saldiva PH, Lavigne E, Matus Correa P, Valdes Ortega N, Kan H, Osorio S, Kysely J, Urban A, Jaakkola JJK, Ryti NRI, Pascal M, Goodman PG, Zeka A, Michelozzi P, Scortichini M, Hashizume M, Honda Y, Hurtado-Diaz M, Cesar Cruz J, Seposo X, Kim H, Tobias A, Iniguez C, Forsberg B, Astrom DO, Ragettli MS, Guo YL, Wu CF, Zanobetti A, Schwartz J, Bell ML, Dang TN, Van DD, Heaviside C, Vardoulakis S, Hajat S, Haines A, Armstrong B. Projections of temperature-related excess mortality under climate change scenarios. Lancet Planet Health. 2017;1(9):e360-e7.


The world is changing rapidly as we know it. Climate has been changing through the decades, and on top of that we are still living in a world highly dependent on fossil fuel. With this array of environmental challenges, health will be one of the few direct human dimensions whereby there is apparent and substantial negative impact. It is important that we understand the underlying mechanisms and the subsequent risks associated with the environmental exposures, and at the same time package such results/information towards policy-relevant inputs.

We welcome all the aspiring students who wish to do their research in the School of Tropical Medicine and Global Health.