Planning and Management


Status : Specially Appointed Assoc. Prof.
Research Field : Clinical infectious diseases, Infectious disease epidemiology

Toyokawa Takao graduated from the University of the Ryukyus School of Medicine. Dr. Toyokawa completed his junior residency at Okinawa Chubu Hospital. Afterward, he worked at Tarama Clinic in a remote island in Okinawa prefecture and finished his senior residency in general internal medicine at Okinawa Chubu Hospital. He then completed a Certificate in Field Epidemiology Training Program Japan (FETP-J) at the National Institute of Infectious Diseases, Japan, and worked as an infectious disease physician at the Okinawa Prefectural Nanbu Medical Center & Children's Medical Center. During his time at the Center, he was awarded a research fellow (The Takemi Fellowship Program in International Health) at the Harvard School of Public Health in 2015. After working as a public health doctor at the Southern Okinawa Public Health Center and Naha City Public Health Center, he moved to the Department of Infection Control and Prevention, Graduate School of Medicine, Osaka University in September 2023, and to the Planning and Management Office, Center for infectious disease education and research, Osaka University (concurrent appointment) in November. His main focus is on clinical infectious diseases and infectious disease epidemiology. He is also interested in risk communication on infectious diseases. Board Certified Fellow/Trainer of the Japanese Association for Infectious Diseases Fellow of The Japanese Society of Internal Medicine.

Research Activities

・Field epidemiology

・Infectious disease surveillance


1.Toyokawa T, Shimada T, Hayamizu T, Sekizuka T, Zukeyama Y, Yasuda M, Nakamura Y, Okano S, Kudaka J, Kakita T, Kuroda M, Nakasone T. Transmission of SARS-CoV-2 during a 2-h domestic flight to Okinawa, Japan, March 2020. Influenza Other Respir Viruses. 2022 Jan;16(1):63-71.

2.Tomari K, Toyokawa T, Takahashi T, Kakita T, Okano S, Kyan H, Tonegawa N, Okawa T, Matsuoka T, Matsumora T. Childhood Leptospirosis in an Industrialized Country: Population-Based Study in Okinawa, Japan. PLoS Negl Trop Dis. 2018 Mar 8;12(3):e0006294.

3.Toyokawa T, Narumi H and Yasuyuki K. Preparedness at Japan's Hospitals Designated for Patients with Highly Infectious Diseases. Health Secur. 2017 Jan/Feb;15(1):97-103.

4.Toyokawa T, Sunagawa T, Yahata Y, Ohyama T, Kodama T, Satoh H, Ueno-Yamamoto K, Arai S, Araki K, Odaira F, Tsuchihashi Y, Takahashi H, Tanaka-Taya K, Okabe N. Seroprevalence of antibodies to pandemic (H1N1) 2009 influenza virus among health care workers in two general hospitals after first outbreak in Kobe, Japan. J Infect. 2011 Oct;63(4):281-7.

5.Toyokawa T, Ohnishi M and Koizumi N. Diagnosis of acute leptospirosis. Expert Rev Anti Infect Ther. 2011 Jan;9(1):111-21.

Return to List
Copyright © OSAKA UNIVERSITY. All Rights Reserved.