according to a 2012 yomiuri shimbun survey, 573 deaths have been certified as "disaster-related" by 13 municipalities affected by the fukushima nuclear disaster. these municipalities are in the no-entry, emergency evacuation preparation or expanded evacuation zones around the crippled fukushima nuclear plant. a disaster-related death certificate is issued when a death is not directly caused by a tragedy, but by "fatigue or the aggravation of a chronic disease due to the disaster".