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。
Objective to evaluate the efficacy and safety of levofloxacin in the treatment of lower respiratory tract bacterial infection with acute exacerbation of chronic obstructive pulmonary disease (COPD).
目的评价左氧氟沙星(喹诺酮类抗菌药)治疗慢性阻塞性肺疾病(COPD)急性加重期病人下呼吸道细菌感染的有效性、安全性。
Objective to evaluate the efficacy and safety of levofloxacin in the treatment of lower respiratory tract bacterial infection with acute exacerbation of chronic obstructive pulmonary disease (COPD).
目的评价左氧氟沙星(喹诺酮类抗菌药)治疗慢性阻塞性肺疾病(COPD)急性加重期病人下呼吸道细菌感染的有效性、安全性。
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