And it makes sense that physically, children in daycare centers would be exposed to more infections and respiratory illnesses than they would at home.

除此之外，就孩子们在身体方面而言，孩子们在日托中心对呼吸道的传染比在家更容易受到感染。

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The only way to eliminate any risk of cross-infection in the aircraft cabin -- or the rapid worldwide spread of an infectious agent -- is to prevent would-be passengers who are either substantially exposed to or carrying transmissible infections from flying.

CNN: Commentary: Flu and your health on a plane