- 1999 - 2001 国立感染症研究所 所長
- 1999 - 2001 National Institute of Infections Diseases,
- 2001 - - 実践女子大学生活科学部 教授
- 2001 - - Jissen Women's University, Professor
- 1994 - 1999 国立国際医療センター研究所 所長
- 1994 - 1999 Research Institute, International Medical
- 1989 - 1994 Kyoto University Faculty of Medicine
- 1989 - 1994 Kyoto University, Professor
- 1983 - 1989 The University of Tokyo The Institute of Medical Science
- 1983 - 1989 Tokyo University, Professor
- 1973 - 1983 Osaka University Research Institute for Microbial Diseases
- 1973 - 1983 Osaka University, Associate Professor
- 1965 - 1973 Osaka University Research Institute for Microbial Diseases
- 1965 - 1973 Osaka University, Research Associate
- Director-General
- Center of Japan, Director-General
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International Union of Microbiological Societies
, American Society for Microbiology
, 日本食品微生物学会
, 日本熱帯医学会
, 日本細菌学会