感冒是临床上常见的由病毒引起的疾患。普通感冒的病因主要是鼻病毒、冠状病毒及副流感病毒等。表现症状:喷嚏、鼻塞、流涕等,病情发展当侵犯喉部、气管、支气管时,可出现声音嘶哑、干咳、胸痛等症状。流行性感冒(流感)是由流行性感冒病毒(流感病毒)引起的急性呼吸道传染病。流感病毒有甲、乙、丙三型,传染性极高。表现症状:发热、发冷、头痛、鼻塞、流涕、 Cold is a common clinical disease caused by a virus. The main cause of common cold rhinovirus, coronavirus and parainfluenza virus. Symptoms: sneezing, stuffy nose, runny nose, etc., the development of the disease when the violation of throat, trachea, bronchus, there may be hoarse voice, dry cough, chest pain and other symptoms. Influenza (influenza) is an acute respiratory infection caused by the influenza virus (influenza virus). Influenza virus A, B, C three types, highly contagious. Symptoms: fever, chills, headache, stuffy nose, runny nose,