在现代社会,电话已成为重要的通讯工具。然而,在电话使用者中不乏带菌者或携带病毒者,甚至是现症病人。他们打电话时很可能把口腔或鼻咽腔的微生物喷到话筒里。话筒里阴暗潮湿不通风,适宜微生物停留或生长。所以频繁使用公共场所电话有可能传染感冒、流感、肠炎、结核及肝炎等 In modern times, the telephone has become an important communication tool. However, there is no lack of carriers or carriers of virus among telephone users, and even current patients. They are likely to spray oral or nasopharyngeal microbes into the microphone when they call. Dark and humid microphone is not ventilated, suitable for microbial growth or stay. Therefore, frequent use of public places may spread the flu, flu, enteritis, tuberculosis and hepatitis