Professor Lay Myint Yoshida

Speciality / Research theme / Keywords
Pediatric Infectious Diseases, pneumonia, dengue, HIV drug resistance,, tropical infectious diseases
Masters Programme


M.B.B.S., M.Med.Sc., Ph.D

Personal/work Web page addresses


Research gate or Linked-in account links



Pediatric Infectious Diseases Department, Institute of Tropical Medicine, Nagasaki University


  • 2016~up to now Professor, Institute of Tropical Medicine, Nagasaki University
  • 2010~2016 Asso.Professor, Institute of Tropical Medicine, Nagasaki University2006-2010: Assist.Professor, Institute of Tropical Medicine, Nagasaki University
  • 1999-2006: Research Fellow, AIDS Research Center, National Institute of Infectious Diseases, Tokyo
  • 1994-1999: Senior Researcher, Department of Medical Research, Myanmar
  • 1990-1994: Medical Doctor, Yangon General Hospital, Yangon, Myanmar<


Occasionally give lectures and supervise for MTM, PhD students


Pneumococcal Conjugate Vaccine reduced dosing schedule study in Nha Trang VietnamPediatric Acute Respiratory Infection Surveillance in central Vietnam
Population based cohort study on infectious diseases in Nha Trang, central Vietnam
Birth cohort study in Nha Trang, central Vietnam
Evaluation of Hib vaccine effect on pneumonia in Vietnam
HIV drug resistant studies in Vietnam, Thailand and Japan

The country/countries where you work currently

  • Japan
  • Vietnam

Five MOST IMPORTANT/INTERESTING recent publications

  1. Kitamura N, Hoan TT, Do HM, Dao TA, Le LT, Le TTT, Doan TTT, Chau TN, Dinh HT, Iwaki M, Senoh M, Efstraciou A, Ho NM, Pham DM, Dang DA, Toizumi M, Fine P, Do HT, Yoshida LM. Seroepidemiology and Carriage of Diphtheria in Epidemic-Prone Area and Implications for Vaccination Policy, Vietnam. Emerg Infect Dis. 2023 Jan;29(1):70-80. doi: 10.3201/eid2901.220975.
  2.  Toizumi M, Satoh C, Quilty BJ, Nguyen HAT, Madaniyazi L, Le LT, Ng CFS, Hara M, Iwasaki C, Takegata M, Kitamura N, Nation ML, Satzke C, Kumai Y, Do HT, Bui MX, Mulholland K, Flasche S, Dang DA, Kaneko K, Yoshida LM. Effect of pneumococcal conjugate vaccine on prevalence of otitis media with effusion among children in Vietnam.Vaccine. 2022 Aug 26;40(36):5366-5375. doi: 10.1016/j.vaccine.2022.07.047.
  3.  Qian G, Toizumi M, Clifford S, Le LT, Papastylianou T, Satzke C, Quilty B, Iwasaki C, Kitamura N, Takegata M, Bui MX, Nguyen HAT, Dang DA, van Hoek AJ, Yoshida LM, Flasche S. Association of pneumococcal carriage in infants with the risk of carriage among their contacts in Nha Trang, Vietnam: A nested cross-sectional survey. PLoS Med. 2022 May 31;19(5):e1004016. doi: 10.1371/journal.pmed.1004016. eCollection 2022 May.
  4. Li Y, Wang X, Blau DM, Caballero MT, Feikin DR, Gill CJ, Madhi SA, Omer SB, Simões EAF, Campbell H, Pariente AB, Bardach D, Bassat Q, Casalegno JS, Chakhunashvili G, Crawford N, Danilenko D, Do LAH, Echavarria M, Gentile A, Gordon A, Heikkinen T, Huang QS, Jullien S, Krishnan A, Lopez EL, Markić J, Mira-Iglesias A, Moore HC, Moyes J, Mwananyanda L, Nokes DJ, Noordeen F, Obodai E, Palani N, Romero C, Salimi V, Satav A, Seo E, Shchomak Z, Singleton R, Stolyarov K, Stoszek SK, von Gottberg A, Wurzel D, Yoshida LM, Yung CF, Zar HJ; Respiratory Virus Global Epidemiology Network; Nair H; RESCEU investigators. Global, regional, and national disease burden estimates of acute lower respiratory infections due to respiratory syncytial virus in children younger than 5 years in 2019: a systematic analysis. Lancet. 2022 May 28;399(10340):2047-2064. doi: 10.1016/S0140-6736(22)00478-0. Epub 2022 May 19.
  5. Wang X, Li Y, Deloria-Knoll M, Madhi SA, Cohen C, Arguelles VL, Basnet S, Bassat Q, Brooks WA, Echavarria M, Fasce RA, Gentile A, Goswami D, Homaira N, Howie SRC, Kotloff KL, Khuri-Bulos N, Krishnan A, Lucero MG, Lupisan S, Mathisen M, McLean KA, Mira-Iglesias A, Moraleda C, Okamoto M, Oshitani H, O’Brien KL, Owor BE, Rasmussen ZA, Rath BA, Salimi V, Sawatwong P, Scott JAG, Simões EAF, Sotomayor V, Thea DM, Treurnicht FK, Yoshida LM, Zar HJ, Campbell H, Nair H; Respiratory Virus Global Epidemiology Network. Global burden of acute lower respiratory infection associated with human parainfluenza virus in children younger than 5 years for 2018: a systematic review and meta-analysis. Lancet Glob Health. 2021 Aug;9(8):e1077-e1087. doi: 10.1016/S2214-109X(21)00218-7. Epub 2021 Jun 21.


Severe pediatric infectious diseases such as pneumonia, diarrhea and dengue are the main cause of under-five mortality and morbidity globally. These can be prevented by preventive measures such as vaccines, and early recognition and treatment of risk groups. We conduct population based cohort and intervention studies to provide better preventive measure and treatment for sever pediatric infectious diseases in the tropics.