什么是感冒 感冒是最常见的呼吸道传染病,很多种病毒都能引起感冒,医学上对流行性感冒病毒引起的感冒,称做流行性感冒,其它病毒引起的叫普通感冒。 医学病毒学家估计,成年人一年中平均要有2—5次急性呼吸道感染,其中90～95％是病毒感染引起的感冒。5岁以下幼儿发病次数更多。感冒的常见症状是打喷嚏、鼻塞、流涕、头昏、全身不适或有发烧等。重者可继发咽喉炎、气管炎、肺炎。病情轻重与感染之病毒型别、患者年龄和体质有密切关系。 为什么会反复得感冒 一般说来,大凡得过因某种病 What is a cold? Cold is the most common respiratory disease, many kinds of viruses can cause a cold, medical flu on the flu caused by influenza, called the influenza, other viruses caused by the common cold. Medical virologists estimate that adults have an average of 2-5 acute respiratory infections a year, of which 90 to 95% are cold caused by viral infections. Infants under 5 years of age more frequently. Common symptoms of a cold are sneezing, stuffy nose, runny nose, dizziness, general malaise or fever. Severe cases may be secondary to laryngitis, bronchitis, pneumonia. Serious illness and infection of the virus type, age and physical constitution are closely related. Why do you get a cold again and again?