近年来 ,随着家用空调在我国城市居民家庭中的普及 ,一些主要在寒冷季节多发的病症 ,如感冒 ,发烧 ,肺炎等 ,夏季也出现发病增多的现象 ,甚至会出现人群短时间内集体暴发的现象。此外 ,还有一些文献报道 ,使用空调的人群夏季感冒的发生率高于对照人群 ,人群的支气管哮喘和荨麻? In recent years, with the popularization of household air conditioners in urban households in China, some diseases mainly occurring in the cold season such as colds, fever, pneumonia and the like also show an increasing incidence in summer and even a collective outbreak in a short period of time The phenomenon. In addition, there are some reports that the incidence of summer cold in people who use air conditioners is higher than that in control subjects, people with bronchial asthma and nettle?