感冒是以头痛、咽痛、发热、鼻塞、流涕、咳嗽及四肢疼痛为主要症状的呼吸道传染病。一般认为感冒主要是由病毒引起。尤以流感病毒引起的流行性感冒(流感)传播迅速、更具传染性。多数人一般可于一周后自行痊愈,少数人由于抵抗力弱可继发其它细菌感染,更有极少数人在感冒后,可诱发威胁生命的病毒性心 Cold is a headache, sore throat, fever, nasal congestion, runny nose, cough and limb pain as the main symptoms of respiratory infections. It is generally believed that a cold is caused mainly by a virus. Influenza (influenza) flu caused by influenza virus spread rapidly and more contagiously. Most people generally recover within a week after a few people, a small number of people due to weak resistance secondary to other bacterial infections, but also very few people in the cold, can induce life-threatening viral heart