登革热广泛流行于世界热带和亚热带地区，近年发病有卷土重来之势。由于登革热具有发病突然、传播迅速的特点，因此，加强对登革热病的监测，以便及时发现疫情，采取措施，控制流行。自８０年代中期起，广州市制定了登革热的监测计划，加强了对发热皮疹病人的监测，在市区取得 Dengue fever is widely prevalent in the tropical and subtropical regions of the world. In recent years, the incidence has comeback. As dengue fever has the characteristics of sudden onset and rapid spread, monitoring of dengue fever should be stepped up in order to detect the outbreak in time and take measures to control the epidemic. Since the mid-1980s, Guangzhou has developed a monitoring program of dengue fever, which has strengthened the monitoring of patients with febrile rashes and obtained them in urban areas