白喉是由产毒的白喉杆菌所致的急性传染病。以往病死率很高,近年来广泛开展以预防为主的防治措施,白喉的发病率及死亡率已明显降低,有的地区已绝迹。但病人一旦输入,仍可能发生流行。在74—75年期间,广东省部分地区发生暴发型流行。1979年,由于东南亚难民的流动,使白喉早已绝迹的多米尼加共 Diphtheria is an acute infectious disease caused by toxigenic diphtheria bacilli. In the past, the case fatality rate was very high. In recent years, preventive and control measures have been extensively adopted. The incidence and mortality of diphtheria have been significantly reduced, and some areas have disappeared. However, the patient once entered, may still be prevalent. During 74-75 years, an outbreak of epidemic occurred in some areas of Guangdong Province. In 1979, due to the flow of refugees in Southeast Asia, the diphtheria had long disappeared in Dominica