Kenzaburō Ōe said this quote

For ten years after the atomic bomb was dropped there was so little public discussion of the bomb or of radioactivity that even the Chugoku Shinbun, the major newspaper of the city where the atomic bomb was dropped, did not have the movable type for 'atomic bomb' or 'radioactivity'. The silence continued so long because the U.S. Army Surgeons Investigation Team in the fall of 1945 had issued a mistaken statement: all people expected to die from the radiation effects of the atomic bomb had by then already died; accordingly, no further cases of physiological effects due to residual radiation would be acknowledged.