近数十年来逐渐消逝的由志贺氏痢疾I型菌引起的菌痢从1969年起在中美国家又重新呈现广泛流行,继之波及美国.危地马拉尤为严重,1968~1969年共发生112000~120000名病人,死亡8300~13000人.在危地马拉,上水供水系统受污染是引起爆发、促进流行的主要原因.1969年美国的志贺氏菌痢病人多数发生在旅游中美国家回国的人群中.1972年登记的70例散发志贺氏菌痢中有50例属此性质.同年夏季,美国一所精神病 In recent decades, the dysentery caused by Shigella dysenteriae type I bacteria has been widely re-emerged in China and the United States since 1969, and then spread to the United States. Guatemala is particularly serious with a total of 112,000 ~ 120,000 patients, 83000 ~ 13000 deaths in Guatemala, Sheung Shui water supply system pollution is the main cause of the outbreak, promote the epidemic .1969 years the majority of Shigella dysentery patients in the United States to return to travel in the crowd Of the 70 registered Shigella dysentery cases registered in 1972, 50 were of this nature. In the same summer, a psychiatric illness in the United States