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Dec 20, 2012 at 6:38 comment added Doc These questions most certainly have a purpose. As a relatively recent example, the contact details given on arrival cards were used by many countries to find passengers who had been on the same flights as people infected with bird flu during outbreaks in HK/China. Finding and treating these people early likely resulted in some lives being saved.
Dec 19, 2012 at 17:47 history edited Mark Mayo CC BY-SA 3.0
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Dec 19, 2012 at 6:53 history answered Cjxcz Odjcayrwl CC BY-SA 3.0