Doctor of Medicine, Chiba (Japan) Medical College, 1946. Doctor of Medical Science, Chiba University, 1950.
Associate Institute Food Microbiology, Chiba U., 1947-1951; associate professor Institute Food Microbiology, Chiba U., 1951-1957; professor Institute Food Microbiology, Chiba U., 1973-1987; director Research Institute Chemobiodynamics, Chiba U., 1987-1988; professor Research Center Pathogenic Fungi and Microbial Toxicoses, Chiba U. president, Biotherapy Research Association, Tokyo, since 1988. Visiting research fellow department microbiology University of Pennsylvania, 1957-1959.
Member International Society for Human and Animal Mycology (emeritus), Science Council Japan (president national committee for microbiology 1985-1994), Japanese Society Bateriology (honorary), Japanese Society Medical Mycology (honorary, Medical Mycology award 1984), American Society Microbiology, New York Academy of Sciences.
Married Yuko Fijishiro. Children: Yuko Sekizawa, Satoru Ogura.