近来医界对病毒感染的认识不断提高,病毒可侵犯机体的许多系统,其中以呼吸道感染更为常见。一般认为上呼吸道感染主要是病毒所致,下呼吸道感染则细菌和病毒都能引起。在乳幼儿时期,许多上感、气管炎或肺炎是病毒所引起的。用各种抗菌素治疗病毒感染都无 Recently, the medical community is constantly aware of the virus infection, the virus can invade many systems of the body, of which respiratory infections are more common. Generally believed that the upper respiratory tract infection is caused by the virus, lower respiratory tract infections are bacteria and viruses can cause. During breastfeeding, many flu, bronchitis or pneumonia are caused by the virus. With a variety of antibiotics to treat the virus infection without