痢　　疾辽宁 :3月下旬至 4月 1 9日在朝阳的北票市冠山街道发生一起细菌性痢疾暴发。通过流调、实验室检验 ,确定为一起由于下水道的堵塞外溢污水与上水管道接触 ,造成生活饮用水被污染引起的细菌性痢疾暴发。截止到 4月 1 9日 ,该居民区共发病1 72例 ,罹患率达 30 1 %。各年 Dysentery Liaoning: An outbreak of bacillary dysentery occurs in the streets of Crest Hill, Beipiao, Chaoyang, from late March to April 19. Through flow control and laboratory tests, it was confirmed that the outflow of sewage due to sewer blockage came into contact with the sewage pipe, resulting in the outbreak of bacterial dysentery caused by the contamination of domestic drinking water. As of April 19, a total of 1 72 cases of this residential area had an attack rate of 30 1%. Every year