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我国传染性疾病防治工作面临着新的形势,一些过去已经基本控制的传染病又卷土重来,陆续出现了一些新的传染病,尤其是虫媒传染病。从全球看,当今虫媒传染病的三大流行趋势是:新的病种不断被发现,原有疾病的流行区域不断扩展,疾病流行的频率不断增强。导致虫媒传染病发病人数不断增加的一个重要原因是全球气候变暖,因此,许多过去仅在热带地区出现的虫媒传染病。也频频出现在亚热带、甚至温带地区。
The prevention and control of infectious diseases in our country are facing a new situation. Some infectious diseases that have been basically controlled in the past have come back again and again, and some new infectious diseases have emerged, especially the zoonotic infectious diseases. Globally, the three major epidemic trends of today’s zoonotic diseases are: new types of diseases are constantly being discovered, epidemic areas of existing diseases are expanding, and frequency of epidemics is constantly increasing. An important reason contributing to the rising incidence of vector-borne diseases is the global warming and, as a result, many past-borne diseases that used to occur only in the tropics. Also frequently appear in the subtropical or even temperate regions.