1994- Second Department of Internal Medicine, Nagasaki University, Internship 1996- Department of Internal Medicine, Nagasaki University, Graduate Student 1999- Department of Biochemistry, Nebraska University, USA, Postdoctoral Fellow 2003- Division of Respiratory Medicine, Yahata Hospital, Fukuoka, Section Chief 2005- Department of Infectious Diseases, Nagasaki University, Assistant Professor 2008- Division of Respiratory Medicine, University of Michigan, USA, Visiting Professor 2011- Division of Infection Control, Osaka University Hospital, Lecturer& Vice Chief 2015- Division of Respiratory Medicine, Tohoku Pharmaceutical University Hospital, Professor 2016- Division of Infectious Diseases and Infection Control, Tohoku Medical and Pharmaceutical University Hospital, Manager 2017- Division of Infectious Diseases and Infection Control, Tohoku Medical and Pharmaceutical University, Medical School, Professor.

Shibasaburo Kitasato Memorial Encouragement Award (2010), Japanese Association of Infectious Diseases - Young Investigator Award (2008), Japanese Respiratory Society (Kyusyu) - Best Poster Award (2007), International Society of Chemotherapy