感冒通常也叫“伤风”,是由感冒病毒侵犯鼻腔 及咽喉所致的上呼吸道感染性疾病。感冒是一种常见病、多发病,几乎人人都有过感冒的经历。感冒病毒可通过病人打喷嚏或咳嗽时排放到空气中的呼吸道飞沫传染给别人;正常人也可通过直接接触被感冒病毒传染过的物品如手绢、衣服等被传染。当人在受寒、过于疲劳或精神紧张而抵抗力低下时就容易发生感冒。老年 Common cold is also called “cold” and is a contagious upper respiratory tract infection caused by cold virus in the nose and throat. Cold is a common disease, frequently-occurring disease, almost everyone had had a cold experience. Cold virus can be transmitted to others through respiratory droplets discharged into the air when the patient sneezes or coughs. Normal people can also be infected by direct contact with items infected with cold virus, such as handkerchiefs and clothes. When people are cold, too tired or nervous and the resistance is low, it is easy to catch a cold. elderly