Research fellow Research Institute for Tuberculosis and Leprosy, Tohoku University, Sendai, Japan, 1943-1954, assistant professor department pediatrics, 1954-1963, University professor pediatrics Research Institute for Tuberculosis and Cancer, 1964-1984, professor emeritus, since 1984. Doctor Miyagi branch Japan Anti Tuberculosis Association, since 1984. President Sendai Kosei Hospital, 1973-1980, 86-89.
Adviser Japan Sarcoidosis Committee, Society Paediatrica Japonica, Japan Society Pediatrics Pulmonology (president 1980-1988), Japan Society Pediatrics Infectious Diseases. Technical adviser Shenyang First Tuberculosis Hospital, Shenyang Anti-tuberculosis Center, Shenyang Chest Hospital, People's Republic of China. Captain Medical Corps, Japanese Army, 1943-1945.
Named to Third Order Merit Middle Rising Sun Emperor of Japan, 1994.
- Co-author books in Japanese, including: Virus and Diseases, 1969. Routine Pediatric Diagnosis and Treatment, 1971. New Virology, 1972
Pediatric X-Ray Diagnosis, 1972.
Handbook of Clinical Pneumology, 1977. Present Pediatrics, 1978. Clinical Virology, 1978.
Member International Organization Mycoplasmology, World Association Sarcoidosis and Other Granulomatous Diseases, Japan Society Chest Diseases, Society Japanese Virologists, Japanese Society Tuberculosis, American Society Microbiology, International Union Against Tuberculosis and Lung Disease, Japan Society International Medicine, Japan Association Infectious Diseases, Japanese Association Child Health.; Member editorial board Pediatric Pulmonology, since 1985.