Severe acute respiratory syndromes (SARS) is a neo-type respiratory contagious disease. There was high ratio of infection among health care workers for short-distance contact with SARS patients.
严重急性呼吸综合征是一种新型的呼吸道传染病，其发病急、传染性强，医护人员由于与病人接触密切，感染率较高。
Theory Background: Acute viral upper respiratory infection is a most common clinic infective disease, and about 70%-80% of it is caused by virus.
理论背景急性上呼吸道感染是临床最常见的一种感染性疾病，约有70% - 80%由病毒引起。
The nutritional status and plasma free amino acid (PFAA) of 17 patients with chronic obstructive pulmonary disease(COPD) were assessed with and without acute lower respiratory tract infection.
对17例并发急性下呼吸道感染的慢性用塞性肺病（COPD）患者进行了营养状态评定和血浆游离氨基酸测定。
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