Fifteen infectious disease research groups, which belong to the various departments of Osaka University, collaborate with each other at the initiative of Research Institute for Microbial Diseases. In addition, Obihiro University of Agriculture and Veterinary Medicine, Medical Institute of Bioregulation of Kyushu University, Osaka Prefectural Institute of Public Health, and National Institute of Animal Health will participate in research conducted by this center. In terms of overseas operation, a research base will be established within the National Institute of Health in cooperation with the Department of Medical Sciences of the Thai Ministry of Public Health. The international research center including the oversea research base aims to foster young scientists in the field of infectious diseases in Japan and Southeast Asia. Through these activities, a system will be established to control emerging and reemerging infectious diseases based on an international cooperation basis.