Masahiko Hachiya

Masahiko Hachiya serves as a Visiting Professor at TMGH and Director of the Division of Global Health Policy and Research at Japan's National Center for Global Health and Medicine (NCGM). A pediatrician by training, he leads international research programs evaluating vaccine-preventable diseases across Southeast Asia, with extensive fieldwork in Bhutan, China, Lao PDR, Mongolia, Nigeria, Pakistan, Philippines, and Vietnam focusing on routine immunization, polio eradication, and supplementary immunization activities.

His educational background includes:

• MD from Toho University School of Medicine, Tokyo (1989)
• PhD from Toho University School of Medicine, Tokyo (2000)
• MPH from Harvard School of Public Health, Boston (2004)

Dr. Hachiya's research centers on infectious disease epidemiology with specialization in vaccine-preventable diseases and pediatric health. His methodology integrates seroepidemiological surveys, cold chain assessments, and mathematical modeling to evaluate immunization program effectiveness. Notably, as a member of Japan's National Verification Committee for measles and rubella elimination since 2013, he contributed to the country's verification as measles-free by WHO's Western Pacific Region in 2015.

Analysis of his 2017-2019 publications reveals consistent focus on Southeast Asian immunization challenges, particularly in Lao PDR and Myanmar. His work employs population-based serosurveys and secondary data analysis to examine vaccination coverage gaps, disease seroprevalence, and cold chain integrity, demonstrating how field epidemiology informs public health policy in resource-limited settings.

As a Visiting Professor at TMGH, Dr. Hachiya supervises graduate students through the National Institute for Health Risk Management-affiliated programs, though specific advisees are not documented. His research is supported by NCGM-led initiatives but detailed grant information is unavailable in the provided materials.

He directs NCGM's Division of Global Health Policy and Research, coordinating multinational teams across Southeast Asia to implement field studies and translate findings into immunization policy improvements, with particular emphasis on disease elimination strategies.