Associate professor Michiko Toizumi

Speciality / Research theme / Keywords
Paediatrics, Neonatology, Epidemiology, Public Health, Virology
Masters ProgrammeDoctoral Programme


  • MD
  • MTM
  • PhD

Personal/work Web page addresses



Department of Pediatric Infectious Diseases, Institute of Tropical Medicine (NEKKEN), Nagasaki University


I graduated from Kumamoto University Medical School, Japan and then had worked as a pediatrician for 8 years. Following that, I had studied tropical medicine and pediatric infectious diseases in the Master course of Tropical Medicine and in the Doctoral course in Graduate School of Biomedical Sciences, Nagasaki University. After I received my PhD, I joined the Department of Pediatric Infectious Diseases, the Institute of Tropical Medicine, Nagasaki University as an assistant professor in 2015.


Facilitator of Epidemiology-Statistics Course in School of Tropical Medicine and Global Health, Nagasaki University


Studies on pediatric infectious diseases in Vietnam:

Acute respiratory infections (incidence, viral/bacterial pathogens, risk factors)

Congenital infections (e.g.,rubella, CMV, Zika) and the effect on child development

Pneumococcal conjugate vaccine reduced dosing trial

The country/countries where you work currently


Five MOST IMPORTANT/INTERESTING recent publications

  1. Seroepidemiology and Carriage of Diphtheria in Epidemic-Prone Area and Implications for Vaccination Policy, Vietnam.
    Noriko Kitamura, Thanh T Hoan, Hung M Do, The A Dao, Lien T Le, Thao T T Le, Thuy T T Doan, Thuong N Chau, Hoi T Dinh, Masaaki Iwaki, Mitsutoshi Senoh, Androulla Efstraciou, Nen M Ho, Duc M Pham, Duc-Anh Dang, Michiko Toizumi, Paul Fine, Hung T Do, Lay-Myint Yoshida
    Emerging infectious diseases 29(1) 70-80 2023
  2. Effect of pneumococcal conjugate vaccine on prevalence of otitis media with effusion among children in Vietnam.
    Michiko Toizumi, Chisei Satoh, Billy J Quilty, Hien Anh Thi Nguyen, Lina Madaniyazi, Lien Thuy Le, Chris Fook Sheng Ng, Minoru Hara, Chihiro Iwasaki, Mizuki Takegata, Noriko Kitamura, Monica Larissa Nation, Catherine Satzke, Yoshihiko Kumai, Hung Thai Do, Minh Xuan Bui, Kim Mulholland, Stefan Flasche, Duc Anh Dang, Kenichi Kaneko, Lay-Myint Yoshida
    Vaccine 40(36) 5366-5375 2022
  3. Association of pneumococcal carriage in infants with the risk of carriage among their contacts in Nha Trang, Vietnam: A nested cross-sectional survey.
    George Qian, Michiko Toizumi, Sam Clifford, Lien Thuy Le, Tasos Papastylianou, Catherine Satzke, Billy Quilty, Chihiro Iwasaki, Noriko Kitamura, Mizuki Takegata, Minh Xuan Bui, Hien Anh Thi Nguyen, Duc Anh Dang, Albert Jan van Hoek, Lay Myint Yoshida, Stefan Flasche
    PLoS medicine 19(5) e1004016 2022
  4. Imported Infectious Diseases, Tropical Diseases and Local Endemic Infectious Diseases in Japan.
    Michiko Toizumi, Yuho Horikoshi
    The Pediatric infectious disease journal 41(7) e275-e282 2022
  5. Clinical manifestations of congenital rubella syndrome: A review of our experience in Vietnam
    Michiko Toizumi, Hien Minh Vo, Duc Anh Dang, Hiroyuki Moriuchi, Lay Myint Yoshida
    Vaccine 37(1) 202-209 2019


Please join us if you are interested in our researches on pediatric infectious diseases!