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某矿区在于2001年7月31日至8月22日暴发了一起因游泳而引起的肺炎支原体暴发流行,共发生病例223例,其中住院治疗162例。现将调查情况报告如下。
A mine outbreak was caused by the outbreak of Mycoplasma pneumoniae that occurred from July 31, 2001 to August 22, 2001. A total of 223 cases were reported, of which 162 were hospitalized. Now the investigation report as follows.