飞机机空气循环和普通感冒的症状
Jessica Nutik Zitter1, Peter D Mazonson, Dave P Miller
1Department of Medicine, University of California, San Francisco, Box 0843, San Francisco, CA 94143-0843, USA. nutik@itsa.ucsf.edu
JAMA
|July 23, 2002
概括
飞机的空气循环不增加飞行后上呼吸道感染 (URI) 的风险. 这项研究发现,在使用循环空气和新鲜空气的飞机上的乘客之间,URI症状没有显著差异.
科学领域:
- 航空健康 航空健康
- 传染病传播 传染病传播
- 公共卫生 公共卫生
背景情况:
- 现代商用飞机将机空气的高达50%重新循环,以提高燃油效率,与旧型号不同,仅使用新鲜空气.
- 空气循环对飞机机传染病传播的影响尚不清楚,一些研究表明,在循环空气环境中,普通感冒的发病率增加.
研究的目的:
- 调查飞机机空气循环是否是飞行后上呼吸道感染 (URI) 的重要预测因素.
主要方法:
- 1999年1月至4月期间,从旧金山湾区飞往丹佛的航班上的1100名乘客进行了一项自然实验.
- 参与者在5-7天后完成了飞行前问卷和后续电话采访,以报告URI症状.
- 47%的乘客乘坐100%新鲜空气的飞机,而53%的乘客乘坐重新循环的机空气的飞机.
主要成果:
- 在飞行后呼吸道症状发生率上,在循环和非循环飞机上的乘客之间没有观察到统计学上显著的差异.
- 报告感冒 (19% vs. 21%),流鼻水 (10% vs. 11%) 和聚合的URI症状 (3%在两组中) 的比率相似.
- 在对潜在的混因素进行调整后,这些发现保持一致.
结论:
- 该研究没有发现证据支持声称飞机机空气循环再循环会增加乘客中URI症状的风险的说法.
- 结果表明,目前商用喷气式飞机的空气再循环做法不会对乘客的呼吸系统健康产生不利影响.
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