Matthew Krier shared Ducheneaux's sense of helplessness about not being able to do more.

CNN: March 16, 2013 -- Updated 0041 GMT (0841 HKT)

Merk noted that while measures such as body scans will not prevent the virus from spreading, it does reduce panic and the sense of helplessness, which Merk noted are key factors in contributing to the overall individual and business risk appetite.

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