Nakajima T, Ohta S, Morita H, Midorikawa Y, Mimura S, Yanagisawa N
Department of Hygiene, Shinshu University School of Medicine, Matsumoto, Japan.
J Epidemiol. 1998 Mar;8(1):33-41. doi: 10.2188/jea.8.33.
On the night of June 27, 1994, about 12 liters of sarin were released by terrorists in Matsumoto City, Japan. In order to investigate the epidemic, community-based questionnaire surveys were conducted. The subjects were all inhabitants (2052 people) living and staying in an area of 1050 meters from north to south and 850 meters from east to west including the sarin release site. Participants included 1743 people who answered the questionnaire at the first survey; those with symptoms were contacted for follow-up at four months and one year after the episode. The number of sarin victims were 471 persons. Muscarinic signs were common to all victims; nicotinic signs were only seen in severely affected victims. The geographical distribution of sarin victims was closely related to the direction of the wind. Three weeks after the intoxication, 129 victims still had some symptoms such as dysesthesia of the extremities. At that time, many victims had begun to experience asthenopia, which was even more frequent at four months. Although victims who felt sarin-related symptoms had decreased by a year, some still had symptoms such as asthenopia. Sarin released in a suburban area affected approximately 500 inhabitants living nearby; some still had symptoms a year after the intoxication.
1994年6月27日晚，日本松本市的恐怖分子释放了约12升沙林毒气。为调查疫情，开展了基于社区的问卷调查。调查对象为居住和逗留在包括沙林毒气释放点在内的南北长1050米、东西宽850米区域内的所有居民（2052人）。参与者包括在首次调查中回答问卷的1743人；有症状者在事件发生后的四个月和一年接受随访。沙林毒气受害者有471人。毒蕈碱样症状在所有受害者中都很常见；烟碱样症状仅在受严重影响的受害者中出现。沙林毒气受害者的地理分布与风向密切相关。中毒三周后，129名受害者仍有一些症状，如肢体感觉异常。当时，许多受害者开始出现视力疲劳，四个月时更为常见。尽管一年后感觉有沙林毒气相关症状的受害者有所减少，但仍有一些人有视力疲劳等症状。在郊区释放的沙林毒气影响了附近约500名居民；中毒一年后仍有一些人有症状。
