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近年来,入冬以后,大街小巷到处可以看到有许多人戴口罩。要问为什么要戴口罩?怎样戴口罩?恐怕不是每个人都能回答得很清楚的。究竟为什么要戴口罩?很多同志会异口同声地回答:戴口罩是为了预防呼吸道传染病,如流行性感冒、肺结核等。戴上口罩等于给呼吸道前面加了一道防线,可以起到机械过滤的作用,阻止空气中的病毒、细菌和尘埃等侵入人体的呼吸道,如鼻腔、咽喉、气管、支气管和细支气管等,以免引起呼吸系统疾病。但戴口罩不仅仅是为了保护自己,还可以防止病人鼻咽部的病毒、细菌等通过谈话、呼气、打喷嚏和咳嗽而传染给别人。另外,也可能
In recent years, after entering the winter, many people can see the streets and alleys wearing masks. Why do you want to wear a mask? How to wear a mask? I am afraid not everyone can answer very clearly. Why do we wear masks? Many comrades will reply in unison: Wear masks to prevent respiratory diseases such as influenza and tuberculosis. Wear a mask is equal to the front of the airway added a line of defense, can play the role of mechanical filtration to prevent airborne viruses, bacteria and dust invade the body’s respiratory tract, such as the nasal cavity, throat, trachea, bronchus and bronchioles and so on, so as not to cause Respiratory diseases. However, wearing a mask is not only to protect themselves, but also to prevent the patient’s nasopharynx virus, bacteria, etc. by conversation, exhale, sneezing and coughing and transmission to others. In addition, it is possible